mtDropDown.spacerGif = "images/x.gif"; 
mtDropDown.dingbatOn = "images/expand-1.gif"; 
mtDropDown.dingbatOff = "images/expand-0.gif"; 
mtDropDown.dingbatSize = 14; 
mtDropDown.menuPadding = 1; 
mtDropDown.itemPadding = 4; 
mtDropDown.shadowSize = 2; 
mtDropDown.shadowOffset = 3; 
mtDropDown.shadowColor = "#888"; 
mtDropDown.shadowPng = "images/grey-40.png"; 
mtDropDown.backgroundColor = "#F3F1F1"; 
mtDropDown.backgroundPng = "images/white-90.png"; 
mtDropDown.hideDelay = 1000; 
mtDropDown.slideTime = 200; 

mtDropDown.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
mtDropDown.direction = {down:1,right:2};
mtDropDown.registry = [];
mtDropDown._maxZ = 100;

mtDropDown.isSupported = function() {
if (typeof mtDropDown.isSupported.r == "boolean") 
return mtDropDown.isSupported.r;
var ua = navigator.userAgent.toLowerCase();
var an = navigator.appName;
var r = false;
if (ua.indexOf("gecko") > -1) r = true; 
else if (an == "Microsoft Internet Explorer") {
if (document.getElementById) r = true; 
}
mtDropDown.isSupported.r = r;
return r;
}

mtDropDown.initialize = function() {
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
menu.initialize();
}
}

mtDropDown.renderAll = function() {
var aMenuHtml = [];
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
aMenuHtml[i] = menu.toString();
}
document.write(aMenuHtml.join(""));
}

function mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) {

this.addItem = addItem;
this.addMenu = addMenu;
this.toString = toString;
this.initialize = initialize;
this.isOpen = false;
this.show = show;
this.hide = hide;
this.items = [];

this.onactivate = new Function(); 
this.ondeactivate = new Function(); 
this.onmouseover = new Function(); 
this.onqueue = new Function(); 

this.index = mtDropDown.registry.length;
mtDropDown.registry[this.index] = this;
var id = "mtDropDown" + this.index;
var contentHeight = null;
var contentWidth = null;
var childMenuSet = null;
var animating = false;
var childMenus = [];
var slideAccel = -1;
var elmCache = null;
var ready = false;
var _this = this;
var a = null;
var pos = iDirection == mtDropDown.direction.down ? "top" : "left";
var dim = null;

function addItem(sText, sUrl) {
var item = new mtDropDownItem(sText, sUrl, this);
item._index = this.items.length;
this.items[item._index] = item;
}
function addMenu(oMenuItem) {
if (!oMenuItem.parentMenu == this) throw new Error("Cannot add a menu here");
if (childMenuSet == null) childMenuSet = new mtDropDownSet(mtDropDown.direction.right, -5, 2, mtDropDown.reference.topRight);
var m = childMenuSet.addMenu(oMenuItem);
childMenus[oMenuItem._index] = m;
m.onmouseover = child_mouseover;
m.ondeactivate = child_deactivate;
m.onqueue = child_queue;
return m;
}
function initialize() {
initCache();
initEvents();
initSize();
ready = true;
}
function show() {

if (ready) {
_this.isOpen = true;
animating = true;
setContainerPos();
elmCache["clip"].style.visibility = "visible";
elmCache["clip"].style.zIndex = mtDropDown._maxZ++;

slideStart();
_this.onactivate();
}
}
function hide() {
if (ready) {
_this.isOpen = false;
animating = true;
for (var i = 0, item = null; item = elmCache.item[i]; i++) 
dehighlight(item);
if (childMenuSet) childMenuSet.hide();
slideStart();
_this.ondeactivate();
}
}
function setContainerPos() {
var sub = oActuator.constructor == mtDropDownItem; 
var act = sub ? oActuator.parentMenu.elmCache["item"][oActuator._index] : oActuator; 
var el = act;
var x = 0;
var y = 0;
var minX = 0;
var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
var minY = 0;
var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);

while (sub ? el.parentNode.className.indexOf("mtDropdownMenu") == -1 : el.offsetParent) {
x += el.offsetLeft;
y += el.offsetTop;
if (el.scrollLeft) x -= el.scrollLeft;
if (el.scrollTop) y -= el.scrollTop;
el = el.offsetParent;
}
if (oActuator.constructor == mtDropDownItem) {
x += parseInt(el.parentNode.style.left);
y += parseInt(el.parentNode.style.top);
}
switch (iReferencePoint) {
case mtDropDown.reference.topLeft:
break;
case mtDropDown.reference.topRight:
x += act.offsetWidth;
break;
case mtDropDown.reference.bottomLeft:
y += act.offsetHeight;
break;
case mtDropDown.reference.bottomRight:
x += act.offsetWidth;
y += act.offsetHeight;
break;
}
x += iLeft;
y += iTop;
x = Math.max(Math.min(x, maxX), minX);
y = Math.max(Math.min(y, maxY), minY);
elmCache["clip"].style.left = x + "px";
elmCache["clip"].style.top = y + "px";
}
function slideStart() {
var x0 = parseInt(elmCache["content"].style[pos]);
var x1 = _this.isOpen ? 0 : -dim;
if (a != null) a.stop();
a = new Accelimation(x0, x1, mtDropDown.slideTime, slideAccel);
a.onframe = slideFrame;
a.onend = slideEnd;
a.start();
}
function slideFrame(x) {
elmCache["content"].style[pos] = x + "px";
}
function slideEnd() {
if (!_this.isOpen) elmCache["clip"].style.visibility = "hidden";
animating = false;
}
function initSize() {

var ow = elmCache["items"].offsetWidth;
var oh = elmCache["items"].offsetHeight;
var ua = navigator.userAgent.toLowerCase();

elmCache["clip"].style.width = ow + mtDropDown.shadowSize + 2 + "px";
elmCache["clip"].style.height = oh + mtDropDown.shadowSize + 2 + "px";

elmCache["content"].style.width = ow + mtDropDown.shadowSize + "px";
elmCache["content"].style.height = oh + mtDropDown.shadowSize + "px";
contentHeight = oh + mtDropDown.shadowSize;
contentWidth = ow + mtDropDown.shadowSize;
dim = iDirection == mtDropDown.direction.down ? contentHeight : contentWidth;

elmCache["content"].style[pos] = -dim - mtDropDown.shadowSize + "px";
elmCache["clip"].style.visibility = "hidden";

if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1) {

elmCache["background"].style.width = ow + "px";
elmCache["background"].style.height = oh + "px";
elmCache["background"].style.backgroundColor = mtDropDown.backgroundColor;

elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].style.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize) + "px";
elmCache["shadowRight"].style.backgroundColor = mtDropDown.shadowColor;



elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].style.width = ow - mtDropDown.shadowOffset + "px";
elmCache["shadowBottom"].style.backgroundColor = mtDropDown.shadowColor;
}

else {

elmCache["background"].firstChild.src = mtDropDown.backgroundPng;
elmCache["background"].firstChild.width = ow;
elmCache["background"].firstChild.height = oh;

elmCache["shadowRight"].firstChild.src = mtDropDown.shadowPng;
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].firstChild.width = mtDropDown.shadowSize;
elmCache["shadowRight"].firstChild.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize);



elmCache["shadowBottom"].firstChild.src = mtDropDown.shadowPng;
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].firstChild.height = mtDropDown.shadowSize;
elmCache["shadowBottom"].firstChild.width = ow - mtDropDown.shadowOffset;
}
}
function initCache() {
var menu = document.getElementById(id);
var all = menu.all ? menu.all : menu.getElementsByTagName("*"); 
elmCache = {};
elmCache["clip"] = menu;
elmCache["item"] = [];
for (var i = 0, elm = null; elm = all[i]; i++) {
switch (elm.className) {
case "items":
case "content":
case "background":
case "shadowRight":
case "shadowBottom":
elmCache[elm.className] = elm;
break;
case "item":
elm._index = elmCache["item"].length;
elmCache["item"][elm._index] = elm;
break;
}
}

_this.elmCache = elmCache;
}
function initEvents() {

for (var i = 0, item = null; item = elmCache.item[i]; i++) {
item.onmouseover = item_mouseover;
item.onmouseout = item_mouseout;
item.onclick = item_click;
}

if (typeof oActuator.tagName != "undefined") {
oActuator.onmouseover = actuator_mouseover;
oActuator.onmouseout = actuator_mouseout;
}

elmCache["content"].onmouseover = content_mouseover;
elmCache["content"].onmouseout = content_mouseout;
}
function highlight(oRow) {
oRow.className = "item hover";
if (childMenus[oRow._index]) 
oRow.lastChild.firstChild.src = mtDropDown.dingbatOn;
}
function dehighlight(oRow) {
oRow.className = "item";
if (childMenus[oRow._index]) 
oRow.lastChild.firstChild.src = mtDropDown.dingbatOff;
}
function item_mouseover() {
if (!animating) {
highlight(this);
if (childMenus[this._index]) 
childMenuSet.showMenu(childMenus[this._index]);
else if (childMenuSet) childMenuSet.hide();
}
}
function item_mouseout() {
if (!animating) {
if (childMenus[this._index])
childMenuSet.hideMenu(childMenus[this._index]);
else 
dehighlight(this);
}
}
function item_click() {
if (!animating) {
if (_this.items[this._index].url) 
location.href = _this.items[this._index].url;
}
}
function actuator_mouseover() {
parentMenuSet.showMenu(_this);
}
function actuator_mouseout() {
parentMenuSet.hideMenu(_this);
}
function content_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
_this.onmouseover();
}
}
function content_mouseout() {
if (!animating) {
parentMenuSet.hideMenu(_this);
}
}
function child_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
}
}
function child_deactivate() {
for (var i = 0; i < childMenus.length; i++) {
if (childMenus[i] == this) {
dehighlight(elmCache["item"][i]);
break;
}
}
}
function child_queue() {
parentMenuSet.hideMenu(_this);
}
function toString() {
var aHtml = [];
var sClassName = "mtDropdownMenu" + (oActuator.constructor != mtDropDownItem ? " top" : "");
for (var i = 0, item = null; item = this.items[i]; i++) {
aHtml[i] = item.toString(childMenus[i]);
}
return '<div id="' + id + '" class="' + sClassName + '">' + 
'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">' + 
'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr>' + 
aHtml.join('') + 
'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr></table>' + 
'<div class="shadowBottom"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="shadowRight"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="background"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
'</div></div>';
}
}

mtDropDownSet.registry = [];
function mtDropDownSet(iDirection, iLeft, iTop, iReferencePoint) {

this.addMenu = addMenu;
this.showMenu = showMenu;
this.hideMenu = hideMenu;
this.hide = hide;

var menus = [];
var _this = this;
var current = null;
this.index = mtDropDownSet.registry.length;
mtDropDownSet.registry[this.index] = this;

function addMenu(oActuator) {
var m = new mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
menus[menus.length] = m;
return m;
}
function showMenu(oMenu) {
if (oMenu != current) {

if (current != null) hide(current); 

current = oMenu;

oMenu.show();
}
else {

cancelHide(oMenu);
}
}
function hideMenu(oMenu) {

if (current == oMenu && oMenu.isOpen) {

if (!oMenu.hideTimer) scheduleHide(oMenu);
}
}
function scheduleHide(oMenu) {

oMenu.onqueue();
oMenu.hideTimer = window.setTimeout("mtDropDownSet.registry[" + _this.index + "].hide(mtDropDown.registry[" + oMenu.index + "])", mtDropDown.hideDelay);
}
function cancelHide(oMenu) {

if (oMenu.hideTimer) {
window.clearTimeout(oMenu.hideTimer);
oMenu.hideTimer = null;
}
}
function hide(oMenu) { 
if (!oMenu && current) oMenu = current;
if (oMenu && current == oMenu && oMenu.isOpen) {

cancelHide(oMenu);
current = null;
oMenu.hideTimer = null;
oMenu.hide();
}
}
}

function mtDropDownItem(sText, sUrl, oParent) {
this.toString = toString;
this.text = sText;
this.url = sUrl;
this.parentMenu = oParent;
function toString(bDingbat) {
var sDingbat = bDingbat ? mtDropDown.dingbatOff : mtDropDown.spacerGif;
var iEdgePadding = mtDropDown.itemPadding + mtDropDown.menuPadding;
var sPaddingLeft = "padding:" + mtDropDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
var sPaddingRight = "padding:" + mtDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
return '<tr class="item"><td nowrap style="' + sPaddingLeft + '">' + 
sText + '</td><td width="14" style="' + sPaddingRight + '">' + 
'<img src="' + sDingbat + '" width="14" height="14"></td></tr>';
}
}

function Accelimation(from, to, time, zip) {
if (typeof zip == "undefined") zip = 0;
if (typeof unit == "undefined") unit = "px";
this.x0 = from;
this.x1 = to;
this.dt = time;
this.zip = -zip;
this.unit = unit;
this.timer = null;
this.onend = new Function();
this.onframe = new Function();
}

Accelimation.prototype.start = function() {
this.t0 = new Date().getTime();
this.t1 = this.t0 + this.dt;
var dx = this.x1 - this.x0;
this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
Accelimation._add(this);
}

Accelimation.prototype.stop = function() {
Accelimation._remove(this);
}

Accelimation.prototype._paint = function(time) {
if (time < this.t1) {
var elapsed = time - this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}

Accelimation.prototype._end = function() {
Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}

Accelimation._add = function(o) {
var index = this.instances.length;
this.instances[index] = o;

if (this.instances.length == 1) {
this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
}
}

Accelimation._remove = function(o) {
for (var i = 0; i < this.instances.length; i++) {
if (o == this.instances[i]) {
this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
break;
}
}

if (this.instances.length == 0) {
window.clearInterval(this.timerID);
this.timerID = null;
}
}

Accelimation._paintAll = function() {
var now = new Date().getTime();
for (var i = 0; i < this.instances.length; i++) {
this.instances[i]._paint(now);
}
}

Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }

Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) {
return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}

Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;



var endNumber=true
var mem=0
var carry=10
var hexnum="0123456789abcdef"
var angle="d"
var stack=""
var level="0"
var layer=0


//数字键

function inputkey(key)
{
	var index=key.charCodeAt(0);
	if ((carry==2 && (index==48 || index==49))
	 || (carry==8 && index>=48 && index<=55)
	 || (carry==10 && (index>=48 && index<=57 || index==46))
	 || (carry==16 && ((index>=48 && index<=57) || (index>=97 && index<=102))))
	if(endNumber)
	{
		endNumber=false
		document.calc.display.value = key
	}
	else if(document.calc.display.value == null || document.calc.display.value == "0")
		document.calc.display.value = key
	else
		document.calc.display.value += key
}

function changeSign()
{
    if (document.calc.display.value!="0")
    	if(document.calc.display.value.substr(0,1) == "-")
        	document.calc.display.value = document.calc.display.value.substr(1)
    	else
        	document.calc.display.value = "-" + document.calc.display.value
}

//函数键

function inputfunction(fun,shiftfun)
{
	endNumber=true
	if (document.calc.shiftf.checked)
		document.calc.display.value=decto(funcalc(shiftfun,(todec(document.calc.display.value,carry))),carry)
	else
		document.calc.display.value=decto(funcalc(fun,(todec(document.calc.display.value,carry))),carry)
	document.calc.shiftf.checked=false
	document.calc.hypf.checked=false	
	inputshift()
}

function inputtrig(trig,arctrig,hyp,archyp)
{
	if (document.calc.hypf.checked)
		inputfunction(hyp,archyp)
	else
		inputfunction(trig,arctrig)
}


//运算符

function operation(join,newlevel)
{
	endNumber=true
	var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
	while (newlevel!=0 && (newlevel<=(level.charAt(level.length-1))))
	{
		temp=parse(temp)
		level=level.slice(0,-1)
	}
	if (temp.match(/^(.*\d[\+\-\*\/\%\^\&\|x])?([+-]?[0-9a-f\.]+)$/))
		document.calc.display.value=RegExp.$2
	stack=stack.substr(0,stack.lastIndexOf("(")+1)+temp+join
	document.calc.operator.value=" "+join+" "
	level=level+newlevel
	
}

//括号

function addbracket()
{
	endNumber=true
	document.calc.display.value=0
	stack=stack+"("
	document.calc.operator.value="   "
	level=level+0
	
	layer+=1
	document.calc.bracket.value="(="+layer
}

function disbracket()
{
	endNumber=true
	var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
	while ((level.charAt(level.length-1))>0)
	{
		temp=parse(temp)
		level=level.slice(0,-1)
	}
	
	document.calc.display.value=temp
	stack=stack.substr(0,stack.lastIndexOf("("))
	document.calc.operator.value="   "
	level=level.slice(0,-1)

	layer-=1
	if (layer>0)
		document.calc.bracket.value="(="+layer
	else
		document.calc.bracket.value=""
}

//等号

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"
}


//修改键

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=""
}


//转换键

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<=2)
	document.calc.k3.disabled=(carry<=2)
	document.calc.k4.disabled=(carry<=2)
	document.calc.k5.disabled=(carry<=2)
	document.calc.k6.disabled=(carry<=2)
	document.calc.k7.disabled=(carry<=2)
	document.calc.k8.disabled=(carry<=8)
	document.calc.k9.disabled=(carry<=8)
	document.calc.ka.disabled=(carry<=10)
	document.calc.kb.disabled=(carry<=10)
	document.calc.kc.disabled=(carry<=10)
	document.calc.kd.disabled=(carry<=10)
	document.calc.ke.disabled=(carry<=10)
	document.calc.kf.disabled=(carry<=10)

	
	
}

function inputChangAngle(angletype)
{
	endNumber=true
	angle=angletype
	if (angle=="d")
		document.calc.display.value=radiansToDegress(document.calc.display.value)
	else
		document.calc.display.value=degressToRadians(document.calc.display.value)
	endNumber=true
}

function inputshift()
{
	if (document.calc.shiftf.checked)
	{
		document.calc.bt.value="deg "
		document.calc.ln.value="exp "
		document.calc.log.value="expd"
		
		if (document.calc.hypf.checked)
		{
			document.calc.sin.value="ahs "
			document.calc.cos.value="ahc "
			document.calc.tan.value="aht "
		}
		else
		{
			document.calc.sin.value="asin"
			document.calc.cos.value="acos"
			document.calc.tan.value="atan"
		}
		
		document.calc.sqr.value="x^.5"
		document.calc.cube.value="x^.3"
		
		document.calc.floor.value="小数"
	}
	else
	{
		document.calc.bt.value="d.ms"
		document.calc.ln.value=" ln "
		document.calc.log.value="log "

		if (document.calc.hypf.checked)
		{
			document.calc.sin.value="hsin"
			document.calc.cos.value="hcos"
			document.calc.tan.value="htan"
		}
		else
		{
			document.calc.sin.value="sin "
			document.calc.cos.value="cos "
			document.calc.tan.value="tan "
		}
		
		document.calc.sqr.value="x^2 "
		document.calc.cube.value="x^3 "
		
		document.calc.floor.value="取整"
	}

}
//存储器部分

function clearmemory()
{
	mem=0
	document.calc.memory.value="   "
}

function getmemory()
{
	endNumber=true
	document.calc.display.value=decto(mem,carry)
}

function putmemory()
{
	endNumber=true
	if (document.calc.display.value!=0)
	{
		mem=todec(document.calc.display.value,carry)
		document.calc.memory.value=" M "
	}
	else
		document.calc.memory.value="   "
}

function addmemory()
{
	endNumber=true
	mem=parseFloat(mem)+parseFloat(todec(document.calc.display.value,carry))
	if (mem==0)
		document.calc.memory.value="   "
	else
		document.calc.memory.value=" M "
}

function multimemory()
{
	endNumber=true
	mem=parseFloat(mem)*parseFloat(todec(document.calc.display.value,carry))
	if (mem==0)
		document.calc.memory.value="   "
	else
		document.calc.memory.value=" M "
}

//十进制转换

function todec(num,oldcarry)
{
	if (oldcarry==10 || num==0) return(num)
	var neg=(num.charAt(0)=="-")
	if (neg) num=num.substr(1)
	var newnum=0
	for (var index=1;index<=num.length;index++)
		newnum=newnum*oldcarry+hexnum.indexOf(num.charAt(index-1))
	if (neg)
		newnum=-newnum
	return(newnum)
}

function decto(num,newcarry)
{
	var neg=(num<0)
	if (newcarry==10 || num==0) return(num)
	num=""+Math.abs(num)
	var newnum=""
	while (num!=0)
	{
		newnum=hexnum.charAt(num%newcarry)+newnum
		num=Math.floor(num/newcarry)
	}
	if (neg)
		newnum="-"+newnum
	return(newnum)
}

//表达式解析

function parse(string)
{
	if (string.match(/^(.*\d[\+\-\*\/\%\^\&\|x\<])?([+-]?[0-9a-f\.]+)([\+\-\*\/\%\^\&\|x\<])([+-]?[0-9a-f\.]+)$/))
		return(RegExp.$1+cypher(RegExp.$2,RegExp.$3,RegExp.$4))
	else
		return(string)
}

//数学运算和位运算

function cypher(left,join,right)
{
	left=todec(left,carry)
	right=todec(right,carry)
	if (join=="+")
		return(decto(parseFloat(left)+parseFloat(right),carry))
	if (join=="-")
		return(decto(left-right,carry))
	if (join=="*")
		return(decto(left*right,carry))
	if (join=="/" && right!=0)
		return(decto(left/right,carry))
	if (join=="%")
		return(decto(left%right,carry))
	if (join=="&")
		return(decto(left&right,carry))
	if (join=="|")
		return(decto(left|right,carry))
	if (join=="^")
		return(decto(Math.pow(left,right),carry))
	if (join=="x")
		return(decto(left^right,carry))
	if (join=="<")
		return(decto(left<<right,carry))
	alert("除数不能为零")
	return(left)
}

//函数计算

function funcalc(fun,num)
{
	with(Math)
	{
		if (fun=="pi")
			return(PI)
		if (fun=="e")
			return(E)

		if (fun=="abs")
			return(abs(num))
		if (fun=="ceil")
			return(ceil(num))
		if (fun=="round")
			return(round(num))

		if (fun=="floor")
			return(floor(num))
		if (fun=="deci")
			return(num-floor(num))


		if (fun=="ln" && num>0)
			return(log(num))
		if (fun=="exp")
			return(exp(num))
		if (fun=="log" && num>0)
			return(log(num)*LOG10E)
		if (fun=="expdec")
			return(pow(10,num))

		
		if (fun=="cube")
			return(num*num*num)
		if (fun=="cubt")
			return(pow(num,1/3))
		if (fun=="sqr")
			return(num*num)
		if (fun=="sqrt" && num>=0)
			return(sqrt(num))

		if (fun=="!")
			return(factorial(num))

		if (fun=="recip" && num!=0)
			return(1/num)
		
		if (fun=="dms")
			return(dms(num))
		if (fun=="deg")
			return(deg(num))

		if (fun=="~")
			return(~num)
	
		if (angle=="d")
		{
			if (fun=="sin")
				return(sin(degressToRadians(num)))
			if (fun=="cos")
				return(cos(degressToRadians(num)))
			if (fun=="tan")
				return(tan(degressToRadians(num)))

			if (fun=="arcsin" && abs(num)<=1)
				return(radiansToDegress(asin(num)))
			if (fun=="arccos" && abs(num)<=1)
				return(radiansToDegress(acos(num)))
			if (fun=="arctan")
				return(radiansToDegress(atan(num)))
		}
		else
		{
			if (fun=="sin")
				return(sin(num))
			if (fun=="cos")
				return(cos(num))
			if (fun=="tan")
				return(tan(num))

			if (fun=="arcsin" && abs(num)<=1)
				return(asin(num))
			if (fun=="arccos" && abs(num)<=1)
				return(acos(num))
			if (fun=="arctan")
				return(atan(num))
		}
	
		if (fun=="hypsin")
			return((exp(num)-exp(0-num))*0.5)
		if (fun=="hypcos")
			return((exp(num)+exp(-num))*0.5)
		if (fun=="hyptan")
			return((exp(num)-exp(-num))/(exp(num)+exp(-num)))

		if (fun=="ahypsin" | fun=="hypcos" | fun=="hyptan")
		{
			alert("对不起,公式还没有查到!")
			return(num)
		}
		
		alert("超出函数定义范围")
		return(num)
	}
}

function factorial(n)
{
	n=Math.abs(parseInt(n))
	var fac=1
	for (;n>0;n-=1)
		fac*=n
	return(fac)
}

function dms(n)
{
	var neg=(n<0)
	with(Math)
	{	
		n=abs(n)
		var d=floor(n)
		var m=floor(60*(n-d))
		var s=(n-d)*60-m
	}
	var dms=d+m/100+s*0.006
	if (neg) 
		dms=-dms
	return(dms)
}

function deg(n)
{
	var neg=(n<0)
	with(Math)
	{
		n=abs(n)
		var d=floor(n)
		var m=floor((n-d)*100)
		var s=(n-d)*100-m
	}
	var deg=d+m/60+s/36
	if (neg) 
		deg=-deg
	return(deg)
}

function degressToRadians(degress)
{
	return(degress*Math.PI/180)
}

function radiansToDegress(radians)
{
	return(radians*180/Math.PI)
}

//界面

//-->
