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Print - Calc4Chem: Awesome Scientific Calculator with Physical and Chemical constants - JavaScriptBank.com

Full version: jsB@nk » Calculation » Calculator » Calc4Chem: Awesome Scientific Calculator with Physical and Chemical constants
URL: http://www.javascriptbank.com/calc4chem-scientific-calculator-physical-chemical-constants.html

Calc4Chem: Awesome Scientific Calculator with Physical and Chemical constants © JavaScriptBank.comThis is an amazing JavaScript calculator script that can be used as a common scientific calculator (with functions of sin, cos, log, power, root, memory). However, this JavaScript calculator code also includes a molecular weight scientific calculator and the tables of many physical and chemical constants.Besides, this free JavaScript calculator contains a list of historic tasks, storing all the recent inputs and results. This scientific JavaScript form calculator also displays the numbers rounded to a user-specified number of decimal places automatically in SCI mode. A very advanced and professional online JavaScript calculator but easy to implement.Let's try more HTML JavaScript calculators on jsB@nk: - Chemistry Calculator - Advance calculator with helper - Better Calculator v1.2 - 16 function Scientific Calculator

Full version: jsB@nk » Calculation » Calculator » Calc4Chem: Awesome Scientific Calculator with Physical and Chemical constants
URL: http://www.javascriptbank.com/calc4chem-scientific-calculator-physical-chemical-constants.html



CSS
<style type="text/css">/*     This script downloaded from www.JavaScriptBank.com     Come to view and download over 2000+ free javascript at www.JavaScriptBank.com*//* --------------------------------------------------------- *//*                            Calc4Chem                      *//* --------------------------------------------------------- */#calc4chem {position: relative;top: 15px;width: 529px;height: 377px; margin: auto;border: 3px outset;background: #e4e4e4;text-align: center;color: #eee;}#kalkulator { position: absolute; top: 3px; left: 3px; width: 257px; height: 365px; border: 0px ridge #f00; background: #e4e4e4; color: #fff;}#biljeska { position: absolute; top: 3px; left: 267px; width: 256px; height: 365px; border: 0px ridge #999; background: #e4e4e4; color: #fff;}#konstante  { position: absolute; top: 13px; left: 275px; width: 245px; height: 350px; border: 1px ridge #999; background: #fff; color: #fff; display: none; /*visibility: hidden;    visible hidden */ text-align: center; 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top: 10px; left: 6px; width: 240px; height: 82px; border: 2px ridge #eee; background: #eee;}#numauto, #numsci, #numfix, #nummem, #numrad, #numdeg, #numgrad { position: absolute; margin-top: 2px; width: 26px; height: 10px; font: normal 9px sans-serif; color: #ccc; display: inline; border: 0px solid #e00; background: #eee;}#numauto {left: 5px;color: #000;}#numsci {left: 37px;}#numfix {left: 62px;}#nummem {left: 107px;}#numrad {left: 154px;color: #000;}#numdeg {left: 180px;}#numgrad {left: 205px;}.upit { position: absolute; top: 27px; left: 6px; width: 225px; height: 25px; border: 0px; background: #eee; text-align: left; font: normal 9pt sans-serif; letter-spacing: 1px; color: #0a0;}.rezultat { position: absolute; top: 52px; left: 6px; width: 225px; height: 25px; border: 0px; background: #eee; text-align: right; font: bold 12pt sans-serif; letter-spacing: 1px; color: #00a;}.formatbr { position: absolute; top: 35px; left: 12px; width: 220px; height: 95px; border: 1px solid #cdcdcd; background: #e8e8e8;}.formatnaslov { position: relative; 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Update: 2008/02/27   *//* Copyright © 2008 by EniG.   */</style>


JavaScript
<script type="text/javascript">// Created by: Eni Generalic | http://www.periodni.com/// This script downloaded from www.JavaScriptBank.com// Scientific Calculator written by Eni Generalic - http://www.periodni.com/// Copyright © 2008 by EniG. If you use a variant of this in your page, please email me at eni.generalic@gmail.com// Eni Generalic, Split, Create: 1999/10/14; Update: 2008/03/01// Atomic Weights of the Elements 2005, Pure & Appl. Chem., Vol. 78, No. 11, (2006) 2051-2066).var EniG = "  Calc4Chem - www.periodni.com";var que = "";var ans = 0;var mem = 0;var broj = "0";var tocka = 0;var eksp = 0;var baza = "";var eksponent = 3;var rjesenje = 0;var decimala = 14;var asf = 0;var rdg = 0;var sep1000 = 0;var enter = "";var mr = "";var pi = 3.141592653589793;var e = 2.71828182845905;var abc = "";//window.onerror = handleError;function start(){enter = "\r\n";mr = document.racunalo.memorija.value;document.racunalo.notes.value =  enter + EniG + enter;var dan = new Date();document.racunalo.notes.value += "    " + dan.toLocaleString() + enter + enter;document.racunalo.zadatak.focus();}function handleError() {//alert("YOU HAVE ENCOUNTERED A JAVASCRIPT ERROR");document.racunalo.notes.value += " = Syntax Error\r\n";document.racunalo.rezultat.value = "Syntax Error"; document.racunalo.zadatak.focus();return true;}function memory(operator) {switch(operator) {case 1:// MS memorija = document.racunalo.rezultat.value;memorija = memorija.replace(/ /g,'');document.racunalo.memorija.value = memorija;document.racunalo.MR.title = mr + " (" + memorija + ")";mem = parseFloat(memorija);stanje = (document.getElementById('nummem').style.color == '#000') ? '#ccc' : '#000';document.getElementById('nummem').style.color = stanje;break;    case 2:// MRvar memorija = document.racunalo.memorija.value;if (memorija==0 || slovo(memorija.charAt(0))) {memorija = ""}document.racunalo.zadatak.value += memorija;break; case 3:// CLSif (document.racunalo.zadatak.value == "") {document.racunalo.rezultat.value = "";}else {document.racunalo.zadatak.value = "";}break; case 4:// Modevidi('numformat');break; case 5:// Resetdocument.racunalo.notes.value = enter + EniG + enter;document.racunalo.memorija.value = "";document.racunalo.MR.title = mr;decimala = 14;asf = 0;rdg = 0;sep1000 = 0;mem = 0;ans = 0;document.getElementById('numauto').style.color = '#000';document.getElementById('numsci').style.color = '#ccc';document.getElementById('numfix').style.color = '#ccc';document.getElementById('nummem').style.color = '#ccc';document.getElementById('numrad').style.color = '#000';document.getElementById('numdeg').style.color = '#ccc';document.getElementById('numgrad').style.color = '#ccc';break; }document.racunalo.zadatak.focus();}function dodajBroj(noviznak) {document.racunalo.zadatak.focus();document.racunalo.zadatak.value += noviznak}function dodajConst(noviznak) {document.racunalo.zadatak.focus();document.racunalo.zadatak.value += noviznak;vidi('konstante')}function izracunaj(zarez) {var pitanje = "";var odgovor = "";var mem = 0;//onerror = handleError;if (zarez >= 1) {if (document.racunalo.zadatak.value == "") {broj = document.racunalo.rezultat.value;}else {    broj = document.racunalo.zadatak.value;if (ubacirezultat(broj.charAt(0))) {broj = document.racunalo.rezultat.value + broj;}}}for (var i=0; i<broj.length; i++) {var mm = broj.charAt(i);var mmup = broj.charAt(i+1);var mmdn = broj.charAt(i-1);if (mm == ",") {mm = ".";}else if (mm == "}" || mm == "]") {mm = ")";}else if (mm == "{" || mm == "[") {mm = "(";}else if (mm == " " || mm == "=") {mm = "";}else if (mm == "*" && mmup == "*") {mm = "^"; i += 1;}else if (mm == "+" && mmup == "-") {mm = "-"; i += 1;}else if (mm == "E" && kemilimat(mmup)) {mm = "e";}if (mm == "." && BrojAtoma(mmdn)==false) {mm = "0.";}else if (velikoslovo(mm)) {var kem = 1;}if (pitanje == "0") {if (operator(mm)) {}else if (mm != ".") {pitanje = "";}}//if (i == 0) {//if (mm == "0" && mmup == "0") {mm = "";}//}pitanje += mm;}if (zarez == 1) {document.racunalo.notes.value += pitanje;document.racunalo.upit.value = pitanje;if (kem == 1) {//var atom = "+" + pitanje;odgovor = masa(pitanje);}else {odgovor = zagrada(pitanje);}}else {odgovor = matematika(zarez, pitanje)}odgovor = odgovor.toString();document.racunalo.oldrezultat.value = odgovor;ans = parseFloat(odgovor);izgledbroja(odgovor);document.racunalo.zadatak.value = ""; document.racunalo.zadatak.focus();}function matematika(zarez, rjesenje) {var pitanje = ""; with (Math) {if (zarez == 2) {pitanje = rjesenje + "^2";rjesenje = pow(rjesenje, 2)}else if (zarez == 3) {pitanje = rjesenje + "^(1/2)";rjesenje = sqrt(rjesenje)}else if (zarez == 4) {pitanje = rjesenje + "*(-1)";rjesenje = -rjesenje}else if (zarez == 5) {pitanje = "ln(" + rjesenje + ")";rjesenje = log(rjesenje)}else if (zarez == 6) {pitanje = "e^" + rjesenje;rjesenje = pow(E, rjesenje)}else if (zarez == 7) {pitanje = "1/" + rjesenje;rjesenje = 1/rjesenje}else if (zarez == 8) {pitanje = "log(" + rjesenje + ")";rjesenje = log(rjesenje)/LN10}else if (zarez == 9) {pitanje = "10^" + rjesenje;rjesenje = pow(10, rjesenje)}else if (zarez >= 10 && zarez <= 12) {if (zarez == 10) {pitanje = "atan(" + rjesenje + ")";rjesenje = atan(rjesenje)}else if (zarez == 11) {pitanje = "acos(" + rjesenje + ")";rjesenje = acos(rjesenje)}else if (zarez == 12) {pitanje = "asin(" + rjesenje + ")";rjesenje = asin(rjesenje)}if (document.racunalo.stupnjevi[1].checked) {rjesenje = (rjesenje * 180) / PI}else if (document.racunalo.stupnjevi[2].checked) {rjesenje = (rjesenje * 200) / PI}}else if (zarez >= 14 && zarez <= 16) {if (document.racunalo.stupnjevi[1].checked){radijani = (rjesenje / 180) * PI}else if (document.racunalo.stupnjevi[2].checked){radijani = (rjesenje / 200) * PI}else{radijani = rjesenje}if (zarez == 14) {pitanje = "tan(" + rjesenje + ")";rjesenje = tan(radijani)}else if (zarez == 15) {pitanje = "cos(" + rjesenje + ")";rjesenje = cos(radijani)}else if (zarez == 16) {pitanje = "sin(" + rjesenje + ")";rjesenje = sin(radijani)}}else if (zarez == 17) {pitanje = rjesenje + "%";rjesenje = rjesenje/100}else if (zarez == 18) {pitanje = rjesenje + "ppm";rjesenje = rjesenje/1000000}else if (zarez == 20) {pitanje = rjesenje + "!";rjesenje = factorial(rjesenje)}else if (zarez == 21) {eksponent = prompt("Unesite eksponent / Please enter exponent", 3);pitanje = rjesenje + "^" + eksponent;rjesenje = pow(rjesenje, eksponent)}else if (zarez == 22) {eksponent = prompt("Unesite korijen / Please enter root", 3);document.racunalo.notes.value += rjesenje + "^(1/" + eksponent + ")";rjesenje = pow(rjesenje, (1/eksponent))} }document.racunalo.notes.value += pitanje;document.racunalo.upit.value = pitanje;return rjesenje;}function zagrada(xbroj) {    var intZagClose = 0    var intZagOpen = 0var intXbroj = 0var strNoviXbroj = ""var strNoviZbroj = "";do {//document.racunalo.notes.value += enter + "intXbroj = " + intXbroj;2+(2*(2+4)+3)^3+5xbroj = xbroj.replace(/--/g,"-1*-");intZagClose = xbroj.indexOf(")");if (intZagClose != -1) {for (var i = intZagClose; i >= 0; i--) {if (xbroj.charAt(i)=="(") {intZagOpen = i;strNoviZbroj = xbroj.substring(intZagOpen+1,intZagClose);break;}}}else {strNoviZbroj = xbroj;}strNoviZbroj = strNoviZbroj + "*1";strNoviZbroj = postotak(strNoviZbroj);strNoviZbroj = trigonometrija(strNoviZbroj);strNoviZbroj = logaritam(strNoviZbroj);strNoviZbroj = potencija(strNoviZbroj);strNoviZbroj = racun(strNoviZbroj);if (intZagClose != -1) {xbroj = xbroj.replace(xbroj.substring(intZagOpen, intZagClose+1), strNoviZbroj);}else {xbroj = strNoviZbroj;}}while (intZagClose > 0)return xbroj;}function racun(zbroj) {with (Math) {zbroj = eval(zbroj);}return zbroj;}function potencija(ulaz) {    var intZagClose = 0    var intZagOpen = 0;var intXbroj = ulaz.indexOf("^");  //2+2^3+2,15^2+4while (intXbroj > 0) {for (var i = intXbroj - 1; i >= 0; i--) {if (operator(ulaz.charAt(i)) && ulaz.charAt(i-1)!="e") {//if (i > 0 && operator(ulaz.charAt(i-1))) {intZagOpen = i+1;break;}}if (ulaz.charAt(i) == "-"){if (i == 0) {intZagOpen = 0;}else if (i > 0 && operator(ulaz.charAt(i-1))) {intZagOpen = i;}}var strNoviXbroj = ulaz.substring(intZagOpen,intXbroj);for (var i = intXbroj + 2; i < ulaz.length; i++) {if (operator(ulaz.charAt(i)) && ulaz.charAt(i-1)!="e") {intZagClose = i-1; break}}var strNoviYbroj = ulaz.substring(intXbroj+1,intZagClose+1); if (strNoviXbroj == 'e') {strNoviXbroj = e}; //cpswith (Math) {intXbroj = pow(strNoviXbroj, strNoviYbroj);}//if (i != 0 && ulaz.charAt(i-1)) {}  // za negativne brojeve -3^2 = -9 ili 9ulaz = ulaz.replace(ulaz.substring(intZagOpen, intZagClose+1), intXbroj);intXbroj = ulaz.indexOf("^");}return ulaz;}function postotak(ulaz) {    var intZagClose = 0;    var intZagOpen = 0;var strDesnoFun = new Array ("!", "%");for (var f = 0; f < 2; f++) {var intXbroj = ulaz.indexOf(strDesnoFun[f]);while (intXbroj > 0) {for (var i = intXbroj - 1; i >= 0; i--) {if (operator(ulaz.charAt(i)) && ulaz.charAt(i-1)!="e") {intZagOpen = i+1; break}}var strNoviXbroj = ulaz.substring(intZagOpen,intXbroj);intZagClose = intXbroj+1;with (Math) {if (f == 0) {intXbroj = factorial(strNoviXbroj);}else {intXbroj = strNoviXbroj/100;}}ulaz = ulaz.replace(ulaz.substring(intZagOpen, intZagClose), intXbroj);intXbroj = ulaz.indexOf(strDesnoFun[f]);}}return ulaz;}function trigonometrija(kut) {    var intZagClose = 0var intKut = 0var strNoviKut = ""var strKrozPi = ")"var strPiKroz = ")";switch(rdg) {case 1:strKrozPi = ")*180/pi";strPiKroz = "*pi/180)";break;    case 2:strKrozPi = ")*200/pi";strPiKroz = "*pi/200)";break;default:strKrozPi = ")";strPiKroz = ")";}var strTrigFun = new Array ("sin", "cos", "tan");for (var f = 0; f < 3; f++) {intKut = kut.indexOf(strTrigFun[f]);if (intKut >= 0) {do {//document.racunalo.notes.value += enter + intKut + enter;cos(2*(3+5)+3*(2+4))+1                        2+(2*(2+cos(4))+3)+(3^3+5)*4intZagClose = kut.length;for (var i = intKut+4; i < intZagClose; i++) {if (operator(kut.charAt(i)) && kut.charAt(i-1)!="e") {intZagClose = i;strNoviKut = kut.substring(intKut+3, intZagClose);break;}}if (intKut>0 && kut.charAt(intKut-1)=="a") {intKut = intKut - 1;strNoviKut = "a" + strTrigFun[f] + "(" + strNoviKut + strKrozPi;}else {strNoviKut = strTrigFun[f] + "(" + strNoviKut + strPiKroz;}strNoviKut = racun(strNoviKut);strNoviKut = Math.round(strNoviKut * Math.pow(10,14)) / Math.pow(10,14);kut = kut.replace(kut.substring(intKut, intZagClose), strNoviKut);intKut = kut.indexOf(strTrigFun[f]);}while (intKut != -1);}}return kut;}function logaritam(kut) {    var intZagClose = 0var intKut = 0var strNoviKut = ""var strKrozPi = ")"var strPiKroz = ")";// var e = 2.71828182845905var strLogFun = new Array ("ln", "log");for (var f = 0; f < 2; f++) {intKut = kut.indexOf(strLogFun[f]);if (intKut >= 0) {do {intZagClose = kut.length;for (var i = intKut; i < intZagClose; i++) {if (operator(kut.charAt(i)) && kut.charAt(i-1)!="e") {intZagClose = i;strNoviKut = kut.substring(intKut+strLogFun[f].length, intZagClose);break;}}if (f == 0) {if (intKut>0 && kut.charAt(intKut-1)=="a") {intKut = intKut - 1;strNoviKut = "pow(E," + strNoviKut + ")";}else {strNoviKut = "log(" + strNoviKut + ")";}}else {if (intKut>0 && kut.charAt(intKut-1)=="a") {intKut = intKut - 1;strNoviKut = "pow(10," + strNoviKut + ")";}else {strNoviKut = "log(" + strNoviKut + ")/LN10";}}strNoviKut = racun(strNoviKut);kut = kut.replace(kut.substring(intKut, intZagClose), strNoviKut);intKut = kut.indexOf(strLogFun[f]);}while (intKut != -1);}}return kut;}function izazareza(novibroj) { with (Math) {if (eksp == -1) {var duzina = tocka;if (duzina == -1) {duzina = novibroj.length}var desni = "";if (duzina > 16) {var privremeni = round(novibroj*pow(10, 16)) + " ";var novie = privremeni.indexOf("e");var lijevi = (privremeni.substring(0,novie));lijevi = round(lijevi*pow(10, 15))/pow(10, 15) + " ";desni = (privremeni.substring(novie+2,privremeni.length-1));desni = "e+" + (desni-18);}else {var lijevi = round(novibroj*pow(10, decimala))/pow(10, decimala) + " ";}}else {var lijevi = novibroj.substring(0,eksp);var desni = novibroj.substring(eksp,novibroj.length);lijevi = round(lijevi*pow(10, decimala))/pow(10, decimala) + " ";}lijevi = lijevi.substring(0,lijevi.length - 1);if (lijevi.charAt(0) == ".") {lijevi = "0" + lijevi;}if (decimala < 14) {if (lijevi.indexOf(".") == -1 && decimala != 0) {lijevi += "."}var nula = (tocka + decimala) - (lijevi.length - 1);if (nula > 0 && decimala > 0) {for (var n = 0; n < nula; n++) {lijevi += "0";}}}return (lijevi + desni); }}function factorial(n) {if ((n == 0) || (n == 1)) {return 1;}else {var odgovor = (n * factorial(n-1));return odgovor;}}function masa(atom) { with (Math) { var atominfo = false;var mm="";var mmdn="";var mmup="";var znak="";var izraz="";var Pi=pi;var H=1.0079;var He=4.0026;var Li=6.941;var Be=9.0122;var B=10.811;var C=12.011;var N=14.007;var O=15.999;var F=18.998;var Ne=20.18;var Na=22.99;var Mg=24.305;var Al=26.982;var Si=28.086;var P=30.974;var S=32.065;var Cl=35.453;var Ar=39.948;var K=39.098;var Ca=40.078;var Sc=44.956;var Ti=47.867;var V=50.942;var Cr=51.996;var Mn=54.938;var Fe=55.845;var Co=58.933;var Ni=58.693;var Cu=63.546;var Zn=65.409;var Ga=69.723;var Ge=72.64;var As=74.922;var Se=78.96;var Br=79.904;var Kr=83.798;var Rb=85.468;var Sr=87.62;var Y=88.906;var Zr=91.224;var Nb=92.906;var Mo=95.94;var Tc=98;var Ru=101.07;var Rh=102.91;var Pd=106.42;var Ag=107.87;var Cd=112.41;var In=114.82;var Sn=118.71;var Sb=121.76;var Te=127.6;var I=126.9;var Xe=131.29;var Cs=132.91;var Ba=137.33;var La=138.91;var Ce=140.12;var Pr=140.91;var Nd=144.24;var Pm=145;var Sm=150.36;var Eu=151.96;var Gd=157.25;var Tb=158.93;var Dy=162.5;var Ho=164.93;var Er=167.26;var Tm=168.93;var Yb=173.04;var Lu=174.97;var Hf=178.49;var Ta=180.95;var W=183.84;var Re=186.21;var Os=190.23;var Ir=192.22;var Pt=195.08;var Au=196.97;var Hg=200.59;var Tl=204.38;var Pb=207.2;var Bi=208.98;var Po=209;var At=210;var Rn=222;var Fr=223;var Ra=226;var Ac=227;var Th=232.04;var Pa=231.04;var U=238.03;var Np=237;var Pu=244;var Am=243;var Cm=247;var Bk=247;var Cf=251;var Es=252;var Fm=257;var Md=258;var No=259;var Lr=262;var Rf=267;var Db=268;var Sg=271;var Bh=272;var Hs=277;var Mt=276;var Ds=281;var Rg=280;for (var i=0; i<atom.length; i++) {mm = atom.charAt(i);mmup = atom.charAt(i+1);bigup = mm.toUpperCase();mmdn = atom.charAt(i-1);if (mm == "[") {mm = "("}else if (mm == "]") {mm = ")"}else if (mm == ",") {mm = "."}if (slovo(mm)) {atominfo = true}if (matoperator(mm)) {atominfo = false; znak=""}if (atominfo) {if (matoperator(mmup)) {znak=")"}if (matoperator(mmdn)) {izraz += "(" + mm + znak}else if (mmdn=="(") {izraz += mm + znak}else if (mmdn=="[") {izraz += mm + znak}else if (slovo(mm)) {izraz += "+" + mm + znak}else if (BrojAtoma(mmdn)) {izraz += mm + znak}else if (BrojAtoma(mm)) {izraz += "*" + mm + znak}else {izraz += mm + znak}}else {izraz += mm}}odgovor = eval(izraz);return odgovor; }}function slovo(znak) {var slovo="(ABCDEFGHIKLMNOPRSTUVWXYZ";for (var i=0; i<slovo.length; i++)if (znak == slovo.charAt(i)) {return true} {return false}}function velikoslovo(znak) {var slovo="ABCDEFGHIKLMNOPRSTUVWXYZ";for (var i=0; i<slovo.length; i++)if (znak == slovo.charAt(i)) {return true} {return false}}function maloslovo(znak) {var slovo="abcdefghiklmnoprstuvwxyz";for (var i=0; i<slovo.length; i++)if (znak == slovo.charAt(i)) {return true} {return false}}function matoperator(znak) {var matoperator="*/+-";for (var i=0; i<matoperator.length; i++)if (znak == matoperator.charAt(i)) {return true}if (znak == "") {return true}if (znak == null) {return true}return false}function operator(znak) {var matoperator="^*/+-";if (matoperator.indexOf(znak) >= 0) {return true} {return false}}function ubacirezultat(znak) {var ubacirezultat="^*/+";for (var i=0; i<ubacirezultat.length; i++)if (znak == ubacirezultat.charAt(i)) {return true}return false}function BrojAtoma(znak) {var atom = "1234567890";for (var i=0; i<atom.length; i++)if (znak == atom.charAt(i)) {return true} {return false}}function kemilimat(znak) {var atom = "rsu";if (atom.indexOf(znak) == -1) {return true} {return false}}function numformat(x){var kut = new Array("auto", "sci", "fix");decimala = x;var broj = document.racunalo.oldrezultat.value;if (decimala < 13) {document.racunalo.notes.value += "[" + kut[asf] + decimala + "]";}else {decimala = 14;document.racunalo.notes.value += "[" + kut[asf] + "]";}if (broj != "0" && broj != "") {izgledbroja(broj)}else {document.racunalo.notes.value += enter;}document.racunalo.zadatak.focus();}function scifix(x) {var kut = new Array("numauto", "numsci", "numfix");document.getElementById(kut[asf]).style.color = '#ccc';asf = x;var broj = document.racunalo.oldrezultat.value;switch(x) {case 1:document.getElementById('numsci').style.color = '#000';if (decimala == 14) {document.racunalo.notes.value += "[sci]";}else {document.racunalo.notes.value += "[sci" + decimala + "]";}break;    case 2:document.getElementById('numfix').style.color = '#000';document.racunalo.izaZareza.options[2].selected = true;if (decimala == 14) {decimala = 2;document.racunalo.notes.value += "[fix2]";}else {document.racunalo.notes.value += "[fix" + decimala + "]";}break;default:document.getElementById('numauto').style.color = '#000';document.racunalo.izaZareza.options[14].selected = true;document.racunalo.notes.value += "[auto]";decimala = 14;}if (broj != "0" && broj != "") {izgledbroja(broj)}document.racunalo.zadatak.focus();}function raddeg(x) {var kut = new Array("numrad", "numdeg", "numgrad");document.getElementById(kut[rdg]).style.color = "#ccc";rdg = x;document.getElementById(kut[x]).style.color = "#000";document.racunalo.zadatak.focus();}function seplk() {var broj = document.racunalo.oldrezultat.value;if (document.getElementById('seplk').checked) {document.getElementById('seplk').checked = false;sep1000 = 0;}else {document.getElementById('seplk').checked = true;sep1000 = 1;}if (broj.length > 3) {izgledbroja(broj)}}function izgledbroja(broj) {var nule = "000000000000000";var minus = "";if (broj.charAt(0) == "-") {minus = "-";}if (asf == 2) {if (Math.eval(broj+"*"+minus+"1-1e-"+decimala) < 0) {broj = "0"}}var eplace = broj.indexOf("e");if (eplace > 0) {var x = broj.substring(0, eplace);var y = broj.substring(eplace);}else if (asf == 1) {var x = parseFloat(broj) * 1E50;broj = x.toString();eplace = broj.indexOf("e");x = broj.substring(0, eplace);var y = broj.substring(eplace+1);y = parseInt(y) - 50;y = "e" + y;}else {var x = broj;var y = "";}var oplace = broj.indexOf(".");broj = parseInt(x);if (oplace == -1) {x = "0";} {x = "0" + x.substring(oplace);}x = parseFloat(x);with (Math) {x = round(x * pow(10,decimala)) / pow(10,decimala);broj = abs(broj) + x;}x = broj.toString();oplace = x.indexOf(".");//document.racunalo.notes.value += enter + "oplace_1 = " + oplace;if (oplace == 0) {broj = "0" + x + nule.substring(0, decimala);}else if (oplace > 0) {x = x.concat(nule);broj = x.substring(0, oplace);broj += x.substring(oplace, oplace+decimala+1);}else {broj = x + "." + nule.substring(0, decimala);}if (decimala == 14) {broj = parseFloat(broj)}broj = minus.concat(broj, y);//PROBA   POCETAKif (sep1000) {//document.racunalo.notes.value += enter + "separator_1 = " + broj;var rezultat = "";var strexp = "";oplace = broj.indexOf('.');//if (oplace == -1) {oplace = 0;}eplace = broj.indexOf('e');if (eplace == -1) {eplace = broj.length;} {strexp = broj.substring(eplace);}var tri = 0;for (var i=oplace+1; i<eplace; i++) {tri += 1;if (tri == 3) {rezultat += broj.charAt(i) + " ";tri = 0;}else {rezultat += broj.charAt(i);}}rezultat += strexp//document.racunalo.notes.value += enter + "separator_2 = " + rezultat;if (oplace > -1) {rezultat = "." + rezultat;tri = 0;for (var i=oplace-1; i>=0; i--) {if (tri == 3) {rezultat = broj.charAt(i) + " " + rezultat;tri = 0;}else {rezultat = broj.charAt(i) + rezultat;}tri += 1;}}rezultat = rezultat.replace("- ", "-");broj = rezultat;//document.racunalo.notes.value += enter + "separator_3 = " + rezultat;}//PROBA   KRAJdocument.racunalo.rezultat.value = broj;document.racunalo.notes.value += " = " + broj + enter;return broj;}function zaokruzi_new(ebroj) {// max 16 decimala//var n=16;var x=ebroj.toExponential(decimala);document.racunalo.notes.value += enter + "toExponential = " + x + enter;var x=ebroj.toPrecision(decimala);document.racunalo.notes.value += "toPrecision = " + x + enter;var x=ebroj.toFixed(decimala);document.racunalo.notes.value += "toFixed = " + x + enter;document.racunalo.rezultat.value = x;document.racunalo.notes.value += " = " + x + enter;}function vidi(me) {//if (document.getElementById) {stanje = (document.getElementById(me).style.display == 'block') ? 'none' : 'block';document.getElementById(me).style.display = stanje;//document.getElementById(me).style.visibility = stanje//}}//Eni Generalic, Split, Create: 1999/10/14; Update: 2008/03/01// Copyright © 2008 by EniG.</script>


HTML
<div id="calc4chem"><!--/*     This script downloaded from www.JavaScriptBank.com     Come to view and download over 2000+ free javascript at www.JavaScriptBank.com*/--><!-- BEGIN  calc4chem --><form action="http://www.periodni.com" name="racunalo"><input type="hidden" name="oldrezultat" value=""><input type="hidden" name="memorija" value="Memory recall"><div id="kalkulator"><div class="displej"><input type="text" name="numauto" value="AUTO" id="numauto" onfocus="ascifix[0].click()"><input type="text" name="numsci" value="SCI" id="numsci" onfocus="ascifix[1].click()"><input type="text" name="numfix" value="FIX" id="numfix" onfocus="ascifix[2].click()"><input type="text" name="nummem" value="MEM" id="nummem" onfocus="MS.click()"><input type="text" name="numrad" value="RAD" id="numrad" onfocus="stupnjevi[0].click()"><input type="text" name="numdeg" value="DEG" id="numdeg" onfocus="stupnjevi[1].click()"><input type="text" name="numgrad" value="GRAD" id="numgrad" onfocus="stupnjevi[2].click()"><input type="text" name="upit" value="Problem" onClick="this.select()" class="upit"><input type="text" name="rezultat" value="Solution" onClick="this.select()" class="rezultat"></div><div class="zadatak"><input type="text" name="zadatak" value="" onKeyDown="if (event.keyCode==13) {enter.click()}" class="unos"></div><input type="button" name="cls" value="Cls" title="Clear" onClick="memory(3)" class="cls"><div class="tipkovnica"><input type="button" name="sqrt" value="√¯" title="Square root" onClick="izracunaj(3)" class="b11"><input type="button" name="root" value="y√¯x" title="Root" onClick="izracunaj(22)" class="b12"><input type="button" name="ln" value="ln" title="Natural logarithm" onClick="izracunaj(5)" class="b13"><input type="button" name="log" value="log" title="Common logarithm" onClick="izracunaj(8)" class="b14"><input type="button" name="tan" value="tan" title="Tangent" onClick="izracunaj(14)" class="b15"><input type="button" name="atan" value="atan" title="Arc tangent" onClick="izracunaj(10)" class="b16"><input type="button" name="kvadrat" value="x²" title="Square" onClick="izracunaj(2)" class="b21"><input type="button" name="potencija" value="x^y" title="Power" onClick="izracunaj(21)" class="b22"><input type="button" name="aln" value="e^x" title="Natural antilogarithm" onClick="izracunaj(6)" class="b23"><input type="button" name="alog" value="10^x" title="Common antilogarithm" onClick="izracunaj(9)" class="b24"><input type="button" name="cos" value="cos" title="Cosine" onClick="izracunaj(15)" class="b25"><input type="button" name="acos" value="acos" title="Arc cosine" onClick="izracunaj(11)" class="b26"><input type="button" name="sign" value="+/-" title="Sign change" onClick="izracunaj(4)" class="b31"><input type="button" name="1/x" value="1/x" title="Reciprocal" onClick="izracunaj(7)" class="b32"><input type="button" name="fact" value="x!" title="Factorial" onClick="izracunaj(20)" class="b33"><input type="button" name="postotak" value="%" title="Percent" onClick="izracunaj(17)" class="b34"><input type="button" name="sin" value="sin" title="Sine" onClick="izracunaj(16)" class="b35"><input type="button" name="asin" value="asin" title="Arc sine" onClick="izracunaj(12)" class="b36"><input type="button" name="7" value="7" title="Seven" onClick="dodajBroj(7)" class="b41"><input type="button" name="8" value="8" title="Eight" onClick="dodajBroj(8)" class="b42"><input type="button" name="9" value="9" title="Nine" onClick="dodajBroj(9)" class="b43"><input type="button" name="djeljeno" value="÷" title="Division" onClick="dodajBroj('/')" class="b44"><input type="button" name="MS" value="MS" title="Memory store" onClick="memory(1)" class="b45"><input type="button" name="MR" value="MR" title="Memory recall" onClick="memory(2)" class="b46"><input type="button" name="4" value="4" title="Four" onClick="dodajBroj(4)" class="b51"><input type="button" name="5" value="5" title="Five" onClick="dodajBroj(5)" class="b52"><input type="button" name="6" value="6" title="Six" onClick="dodajBroj(6)" class="b53"><input type="button" name="puta" value="×" title="Multiplication" onClick="dodajBroj('*')" class="b54"><input type="button" name="con" value="Constants" title="Physical Constants" onClick="vidi('konstante'); return false;" class="b55"><input type="button" name="1" value="1" title="One" onClick="dodajBroj(1)" class="b61"><input type="button" name="2" value="2" title="Two" onClick="dodajBroj(2)" class="b62"><input type="button" name="3" value="3" title="Three" onClick="dodajBroj(3)" class="b63"><input type="button" name="minus" value="-" title="Subtraction" onClick="dodajBroj('-')" class="b64"><input type="button" name="lijevo" value="(" title="Parentheses" onClick="dodajBroj('(')" class="b65"><input type="button" name="desno" value=")" title="Parentheses" onClick="dodajBroj(')')" class="b66"><input type="button" name="0" value="0" title="Zero" onClick="dodajBroj(0)" class="b71"><input type="button" name="." value="." title="Decimal point" onClick="dodajBroj('.')" class="b72"><input type="button" name="exp" value="exp" title="Exponent" onClick="dodajBroj('e')" class="b73"><input type="button" name="plus" value="+" title="Addition" onClick="dodajBroj('+')" class="b74"><input type="button" name="enter" value="=" title="Calculate" onClick="izracunaj(1)" class="b75"></div>   <!-- END  tipkovnica --><div id="numformat"><p class="formatnaslov">Number formats</p><div class="formatbr"><div class="automatik"><input type="radio" name="ascifix" checked title="Automatic" onClick="scifix(0)"><a href="javascript:document.racunalo.ascifix[0].click()" onMouseOver="self.status='Automatic'; return true">Auto</a></div><div class="scienc"><input type="radio" name="ascifix" title="Scientific notation" onClick="scifix(1)"><a href="javascript:document.racunalo.ascifix[1].click()" onMouseOver="self.status='Scientific notation'; return true">Sci</a></div><div class="fiksed"><input type="radio" name="ascifix" title="Fixed number of decimal places" onClick="scifix(2)"><a href="javascript:document.racunalo.ascifix[2].click()" onMouseOver="self.status='Fixed number of decimal places'; return true">Fix</a></div><div class="decnaslov">Decimals</div><select name="izaZareza" SIZE="1" onChange="numformat(this.selectedIndex)" class="decimal"><option value="0"> 0 </option><option value="1"> 1 </option><option value="2"> 2 </option><option value="3"> 3 </option><option value="4"> 4 </option><option value="5"> 5 </option><option value="6"> 6 </option><option value="7"> 7 </option><option value="8"> 8 </option><option value="9"> 9 </option><option value="10"> 10 </option><option value="11"> 11 </option><option value="12"> 12 </option><option value="13"> ---- </option><option value="14" selected> auto </option></select><div class="separator"><a href="javascript:seplk()" onMouseOver="self.status='Separator tisu?ica'; return true">1000 separator </a><input type="checkbox" id="seplk" onClick="seplk()"></div></div>   <!-- END  formatbr --><div class="rad"><input type="radio" name="stupnjevi" checked title="Radians" onClick="raddeg(0)"><span class="deg"><a href="javascript:document.racunalo.stupnjevi[0].click()" onMouseOver="self.status='Radians'; return true">Rad </a></span><input type="radio" name="stupnjevi" title="Degrees" onClick="raddeg(1)"><span class="deg"><a href="javascript:document.racunalo.stupnjevi[1].click()" onMouseOver="self.status='Degrees'; return true">Deg </a></span><input type="radio" name="stupnjevi" title="Grads" onClick="raddeg(2)"><span class="deg"><a href="javascript:document.racunalo.stupnjevi[2].click()" onMouseOver="self.status='Grads'; return true">Grad</a></span></div><input type="button" name="close" value="Close" title="Close Form" onClick="memory(4)" class="n4"><div class="n2copy">Copyright © 2008 by Eni Generalic</div></div>   <!-- END  numformat --></div>   <!-- END  racunalo --><div id="biljeska"><textarea name="notes" class="tekstarea">  Calc4Chem - www.periodni.com</textarea><input type="button" name="mode" value="Mode" title="Number formats" onClick="memory(4)" class="n1"><input type="button" name="select" value="Select All" title="Select All" onClick="document.racunalo.notes.select()" class="n2"><input type="reset" name="clear" value="Clear" title="Clear All" onClick="memory(5)" class="n3"></div>   <!-- END  biljeska --><div id="konstante"><div class="constnaslov"><b>PHYSICAL CONSTANTS</b></div><div class="const" onClick="dodajConst(-273.15)"><a href="#">Absolute zero<br>-273.15 °C</a></div><div class="const" onClick="dodajConst(9.80665)"><a href="#">Acceleration of free fall, standard<br>9.80665 m/s<sup>2</sup></a></div><div class="const" onClick="dodajConst(1.6605402e-27)"><a href="#">Atomic mass unit<br>1.6605402×10<sup>-27</sup> kg</a></div><div class="const" onClick="dodajConst(6.0221367e23)"><a href="#">Avogadro constant<br>6.0221367×10<sup>23</sup> 1/mol</a></div><div class="const" onClick="dodajConst(2.718281828)"><a href="#">Base of natural logarithms <br>2.718281828</a></div><div class="const" onClick="dodajConst(1.380658e-23)"><a href="#">Boltzmann constant<br>1.380658×10<sup>-23</sup> J/K</a></div><div class="const" onClick="dodajConst(2.81794092e-15)"><a href="#">Classical electron radius<br>2.81794092×10<sup>-15</sup> m</a></div><div class="const" onClick="dodajConst(9.1093897e-31)"><a href="#">Electron mass<br>9.1093897×10<sup>-31</sup> kg</a></div><div class="const" onClick="dodajConst(5.44617013e-4)"><a href="#">Electron-proton mass ratio<br>5.44617013×10<sup>-4</sup></a></div><div class="const" onClick="dodajConst(1.6021892e-19)"><a href="#">Electronvolt<br>1.6021892×10<sup>-19</sup> J</a></div><div class="const" onClick="dodajConst(1.60217733e-19)"><a href="#">Elementary charge<br>1.60217733×10<sup>-19</sup> C</a></div><div class="const" onClick="dodajConst(96485.309)"><a href="#">Faraday constant<br>96485.309 C/mol</a></div><div class="const" onClick="dodajConst(3.7417749e-16)"><a href="#">First radiation constant<br>3.7417749×10<sup>-16</sup> W m<sup>2</sup></a></div><div class="const" onClick="dodajConst(8.314510)"><a href="#">Molar gas constant<br>8.314510 J/mol K</a></div><div class="const" onClick="dodajConst(0.02241410)"><a href="#">Molar volume<br>(Ideal gas, <i>T</i> = 273.15 K, <i>p</i> = 101.325 kPa)<br>0.02241410 m<sup>3</sup>/mol</a></div><div class="const" onClick="dodajConst(6.67259e-11)"><a href="#">Newtonian constant of gravitation<br>6.67259×10<sup>-11</sup> N m<sup>2</sup>/kg<sup>2</sup></a></div><div class="const" onClick="dodajConst(12.566370614e-7)"><a href="#">Permeability of vacuum<br>12.566370614×10<sup>-7</sup> N/A<sup>2</sup></a></div><div class="const" onClick="dodajConst(8.854187817e-12)"><a href="#">Permittivity of vacuum<br>8.854187817×10<sup>-12</sup> F/m</a></div><div class="const" onClick="dodajConst(3.1415926535897932)"><a href="#">PI<br>3.1415926535897932</a></div><div class="const" onClick="dodajConst(6.6260755e-34)"><a href="#">Planck constants<br>6.6260755×10<sup>-34</sup> J s</a></div><div class="const" onClick="dodajConst(0.01438769)"><a href="#">Second radiation constant<br>0.01438769 m K</a></div><div class="const" onClick="dodajConst(1400)"><a href="#">Solar constant<br>1400 W/m<sup>2</sup></a></div><div class="const" onClick="dodajConst(299792458)"><a href="#">Speed of light in vacuum<br>299792458 m/s</a></div><div class="const" onClick="dodajConst(340)"><a href="#">Speed of sound in air at STP<br>340 m/s</a></div><div class="const" onClick="dodajConst(101325)"><a href="#">Standard pressure<br>101325 Pa</a></div></div>   <!-- END  konstante --></form><div class="crta"></div></div>