sürüklenebilir hesap makinesi

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Hesap Makinası <a href="//www.binbirkod.com" target="_blank" rel="nofollow">www.binbirkod.com</a>

var calculation = "";
var resultDone = false;

function addToCalc(val) {
if(isNaN(val) && isNaN(calculation.substring(calculation.length-1, calculation.length)))
return false;

if(!isNaN(val) && resultDone) {
resetCalc();
resultDone = false;
} else if(isNaN(val) && resultDone) {
resultDone = false;
}
calculation += val;
showResult();
}

function addToCalcDirect(val) {
calculation = val;
}

function resetCalc() {
calculation = "";
showResult();
}

function positiveNegative() {
if(calculation.substring(0, 1) == "-")
calculation = calculation.substring(1, calculation.length);
else
calculation = "-" + calculation;
showResult();
}

function calculate() {
if(calculation != "") {
try {
calculation = eval(calculation);
} catch(e) {
reportError("Error!");
}
resultDone = true;
showResult();
}
else
return false;
}

function percentage() {
try {
calculation = eval(calculation) / 100;
} catch(e) {
reportError("Error!");
}
resultDone = true;
showResult();
}

function squareRoot()
{
try {
calculation = Math.sqrt(eval(calculation));
} catch(e) {
reportError("Error!");
}
resultDone = true;
showResult();
}

function showResult() {
calculation = calculation.toString();
if(calculation == "NaN") {
reportError("Error!");
} else {
document.getElementById("result").value = calculation;
}
}

function reportError(msg) {
calculation = msg;
document.getElementById("result").value = msg;
}

function closeCalculator() {
document.getElementById("calculator").style.display = "none";
}

function about() {
msg = "Hesap Makinası\n\n";
msg += "Dilediğiniz yere sürükleyebilirsiniz.\n\nhttp://www.istanbuldahayat.com";
alert(msg);
}

var ie = document.all;
var ns6 = document.getElementById && !document.all;
var dragapproved=false;
var z, x, y;

function move(e) {
if (dragapproved) {
z.style.left=ns6? temp1+e.clientX-x: temp1+event.clientX-x;
z.style.top=ns6? temp2+e.clientY-y : temp2+event.clientY-y;
return false;
}
}

function drags(e) {
if (!ie&&!ns6)
return;
var firedobj = ns6? e.target : event.srcElement;
var topelement = ns6? "HTML" : "BODY";
while (firedobj.tagName != topelement&&firedobj.className != "drag") {
firedobj = ns6? firedobj.parentNode : firedobj.parentElement;
}
if (firedobj.className == "drag") {
dragapproved = true;
z = firedobj;
temp1 = parseInt(z.style.left+0);
temp2 = parseInt(z.style.top+0);
x = ns6? e.clientX: event.clientX;
y = ns6? e.clientY: event.clientY;
document.onmousemove=move;
return false;
}
}
document.onmousedown=drags;
document.onmouseup=new Function("dragapproved=false");

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