Ńyf[Ä„‹{hV

.tb {font-family:Simsun,verdana,arial;font-size:13px;}
input {font-family:Simsun;verdana,arial,Simsun;font-size:13px;}







var endNumber=true;
var mem=0;
var carry=10;
var hexnum="0123456789abcdef";
var angle="d";
var stack="";
var level="0";
var layer=0;


//peW[.•

function inputkey(key)
{
var index=key.charCodeAt(0);
if ((carry==2 && (index==48 || index==49))
|| (carry==8 && index>=48 && index=48 && index=48 && index=97 && index0)
document.calc.bracket.value="(="+layer
else
document.calc.bracket.value=""
}

//I{÷S

function result()
{
endNumber=true
while (layer>0)
disbracket()
var temp=stack+document.calc.display.value
while ((level.charAt(level.length-1))>0)
{
temp=parse(temp)
level=level.slice(0,-1)
}

document.calc.display.value=temp
document.calc.bracket.value=""
document.calc.operator.value=""
stack=""
level="0"
}


//îO9e.•

function backspace()
{
if (!endNumber)
{
if(document.calc.display.value.length>1)
document.calc.display.value=document.calc.display.value.substring(0,document.calc.display.value.length - 1)
else
document.calc.display.value=0
}
}

function clearall()
{
document.calc.display.value=0
endNumber=true
stack=""
level="0"
layer=""
document.calc.operator.value=""
document.calc.bracket.value=""
}


//lŹbc.•

function inputChangCarry(newcarry)
{
endNumber=true
document.calc.display.value=(decto(todec(document.calc.display.value,carry),newcarry))
carry=newcarry

document.calc.sin.disabled=(carry!=10)
document.calc.cos.disabled=(carry!=10)
document.calc.tan.disabled=(carry!=10)
document.calc.bt.disabled=(carry!=10)
document.calc.pi.disabled=(carry!=10)
document.calc.e.disabled=(carry!=10)
document.calc.kp.disabled=(carry!=10)

document.calc.k2.disabled=(carry