function element(tagname){
return node(document.createElement(tagname));
}
function node(node){
 //如果参数是字符，就获取其节点对象asda
 if(typeof(node)=="string"){var node=document.getElementById(node);}
 //如果已经加过方法就直接返回；
 if(node.style.mark==true){return node;}
 //如果没有加过方法做上标记；
 node.style.mark=true;
if(!node.style.opacity){
	node.style.opacity=1;
}
 
 
 node.remove=function(){
 if(!node.parentNode){return;}
 node.parentNode.removeChild(node);
 }
 
 
 node.addback=function(domNode){
 if(!domNode){return;}
  var domNode2=domNode.nextSibling;
  if(!domNode2){
  domNode.parentNode.appendChild(node);
  }
  else{
  domNode2.parentNode.insertBefore(node,domNode2);
  }
 }
 
 node.addfront=function(domNode){
 if(!domNode){return;}
 domNode.parentNode.insertBefore(node,domNode);
 }
 
 node.addlast=function(parentNode){
 if(!parentNode){parentNode=document.body}
 parentNode.appendChild(node);
 }
 
 node.addfirst=function(parentNode){
 if(!parentNode){parentNode=document.body}
 parentNode.insertBefore(node,parentNode.firstChild);
 }
 
 node.addcss=function(styles){
  for(styleitem in styles){
  node.style[styleitem]=styles[styleitem];
  }
 }
 
 node.addatts=function(atts){
  for(attitem in atts){
  node[attitem]=atts[attitem];
  }
 }
 
 node.getstyle=function(){
   return node.currentStyle||document.defaultView.getComputedStyle(node,null);
 }
 
 node.hide=function(time,end,fun){
 node.style.display2=node.getstyle().display;
 if(isNaN(time)){time=700;}
 if(isNaN(end)){end=0;}
 if(navigator.userAgent.indexOf("MSIE")>=0){
 //node.style.filter="progid\:DXImageTransform.Microsoft.Alpha\(style=0,opacity=100,finishOpacity=100\)";
 var speed=1000/time;
 var opacity=node.style.opacity*100;
 var number=setInterval(function(){
                          opacity-=speed;
                          node.style.filter="progid\:DXImageTransform.Microsoft.Alpha\(style=0,opacity="+opacity+",finishOpacity=100\)";
						  node.style.opacity=opacity/100;
						   if(opacity<=end){
						   
						   clearInterval(number);
						   //node.style.display="none";
						   if(typeof(fun)=="function"){fun();}
						   }
						   
						  },1)
 }
 else{
  //node.style.opacity=1;
  var speed=10/time;
  var opacity=node.style.opacity;
  var number=setInterval(function(){
                          opacity-=speed;
						   opacity=parseInt(opacity*10000)/10000;
						   node.style.opacity=opacity;
						   if(opacity<=(end/100)){
						   
						   clearInterval(number);
						   //node.style.display="none";
						   if(typeof(fun)=="function"){fun();}
						   return;
						   }
						   
						  },1)
 }
 }
 node.show=function(time,end,fun){

 //if(node.style.display2){node.style.display=node.style.display2;}
 if(isNaN(time)||time==""||time==null){time=700;}
 if(isNaN(end)||end==""||end==null){end=100;}
 if(navigator.userAgent.indexOf("MSIE")>=0){
 //node.style.filter="progid\:DXImageTransform.Microsoft.Alpha\(style=0,opacity=0,finishOpacity=100\)";
 var speed=1000/time;
 var opacity=node.getop();
 var number=setInterval(function(){
                          opacity+=speed;
                          node.style.filter="progid\:DXImageTransform.Microsoft.Alpha\(style=0,opacity="+opacity+",finishOpacity=100\)"; 
						  node.style.opacity=opacity/100;
						   if(opacity>=end){
						   clearInterval(number);
						   if(typeof(fun)=="function"){fun();}
						   return;
						   }
						  
						  },1)
 }
 else{
  //node.style.opacity=0;
  var speed=10/time;
  var opacity=node.getop()/100;
  var number=setInterval(function(){
                          opacity+=speed;
						  opacity=parseInt(opacity*10000)/10000;						   
						  node.style.opacity=opacity;
						   if(opacity>=(end/100)){
						   clearInterval(number);
						   if(typeof(fun)=="function"){fun();}
						   return;
						   }

						  },1)
 }
 }
 node.setop=function(number){
  if(isNaN(number)||number==""||number==null){number=50}
  if(number>100){number=100}
  if(number<0){number=0}
  if(navigator.userAgent.indexOf("MSIE")>=0){
  node.style.filter="progid\:DXImageTransform.Microsoft.Alpha\(style=0,opacity="+number+",finishOpacity=100\)";
  }
  node.style.opacity=number/100;
 }
 node.getop=function(){
 return node.style.opacity*100;
 }
 node.addEvent=function(s,f){
	  if(node.addEventListener){
	  node.addEventListener(s,f,false)
	  }
	  else{
	  node.attachEvent("on"+s,f)
	  }
  }
 node.removeEvent=function(s,f){
	 if(node.removeEventListener){
	 node.removeEventListener(s,f,false);
	 }
	 else{
	 node.detachEvent("on"+s,f)
	 }
 }
	node.addClass=function(classname){
	if(node.className==""){node.className=classname;return true;}
		var classnames=node.className.split(" ");
			for(var i=0;i<classnames.length;i++){
			if(classnames[i]==classname){
			return true;
			}
			}
		node.className+=" "+classname;
		return true;
	}
	
	node.removeClass=function(classname){
	if(node.className==classname){node.className="";return true;}
		var classnames=node.className.split(" ");
			for(var i=0;i<classnames.length;i++){
			if(classnames[i]==classname){
			classnames.splice(i,1)
			}
			}
			node.className="";
	  node.className+=classnames.join(" ");
	}
	


node.nextElement=function(){
if(this.nextSibling.nodeType==1){
return this.nextSibling;
}
 var o=this.nextSibling;
 while(true){
  if(o.nodeType==1){
  break;
  }
  o=o.nextSibling;
 }
 return o;
 }

node.previousElement=function(){
if(this.previousSibling.nodeType==1){
return this.previousSibling;
}
 var o=this.previousSibling;
 while(true){
  if(o.nodeType==1){
  break;
  }
  o=o.previousSibling;
 }
 return o;
 }
	
node.getElementsByClass=function(className){
var childs=node.getElementsByTagName("*");

var arr=[];
 for(var i=0;i<childs.length;i++){
  var classNames=childs[i].className.split(" ");
  for(var a=0;a<classNames.length;a++){
    if(classNames[a]==className){
     arr[arr.length]=childs[i];
	 break;
    }
  }

 }
 return arr;
}
 return node;
}
function isie(){
	if(navigator.userAgent.indexOf("MSIE")>=0){return true;}
	else{return false;}
}
function isie8(){
	if(navigator.userAgent.indexOf("MSIE 8")>=0){return true;}
	else{return false;}
}
function isie7(){
	if(navigator.userAgent.indexOf("MSIE 7")>=0){return true;}
	else{return false;}
}
function isie6(){
	if(navigator.userAgent.indexOf("MSIE 6")>=0){return true;}
	else{return false;}
}
function isie5(){
	if(navigator.userAgent.indexOf("MSIE 5")>=0){return true;}
	else{return false;}
}
function isff(){
	if(navigator.userAgent.indexOf("Firefox")>=0){return true;}
	else{return false;}
}
function issf(){
	if(navigator.userAgent.indexOf("Safari")>=0){return true;}
	else{return false;}
}
function isop(){
	if(navigator.userAgent.indexOf("Opera")>=0){return true;}
	else{return false;}
}

function win(id,width,height){

	//if(width==""||width==null||isNaN(width)){width=500};
	//if(height==""||height==null||isNaN(height)){height=500};
	var styles={
		width:"100%",
		height:(document.documentElement.scrollHeight)+"px",
		backgroundColor:"#000000",
		top:"0",
		left:"0",
		position:"absolute",
		zIndex:"9999"
	}
	var bg=new element("div");
	bg.addcss(styles);
	bg.setop(70);
	//bg.show(100,50);
	bg.addlast();
	
	if(isie6()){
	var selects=document.getElementsByTagName("select");
		for(var i=0;i<selects.length;i++){
		selects[i].style.visibility="hidden";
		}
	}
	
	if(issf()||isie5()){
	var scrollLeft=document.body.scrollLeft;
	var scrollTop=document.body.scrollTop;
	}
	else{
	var scrollLeft=document.documentElement.scrollLeft;
	var scrollTop=document.documentElement.scrollTop;
	}
	var styles={
		border:"#ffffff solid 5px",
		backgroundColor:"#ffffff",
		top:"50%",
		left:"50%",
		marginLeft:(scrollLeft-width/2)+"px",
		marginTop:(scrollTop-height/2)+"px",
		position:"absolute",
		zIndex:"10000"
	}
	var iframe=new element("div");
    iframe.innerHTML=node(id).innerHTML;
	iframe.addcss(styles);
	if(isop()){iframe.show(100)}
	iframe.addlast();
    if(!isop()){iframe.show(100)}
	this.iframe=iframe;
	this.bg=bg;
	bg.win=this;
	var closeNode=new element("a");
	closeNode.win=this;
	closeNode.href="#";
	closeNode.innerHTML="close";
	closeNode.style.cssFloat="right";
	closeNode.style.styleFloat="right";
	closeNode.onclick=function(){
		this.win.close();
		}
		//closeNode.addlast(iframe);
	bg.onclick=function(){
	this.win.close();
	}
	win.prototype.close=function(){
	this.iframe.hide(20,0,removeiframe);
	this.bg.hide(20,0,removebg);
	iframe=this.iframe;
	bg=this.bg;
	function removeiframe(){
		iframe.remove();
		}
	function removebg(){
		bg.remove();
		}
		
	  if(isie6()){
	    var selects=document.getElementsByTagName("select");
		for(var i=0;i<selects.length;i++){
		selects[i].style.visibility="visible";
		}
	  }
	}
}
function base_url(){
var url=document.location;
url=url.toString();
url=url.split("//");
index=url[1].split("/");
return url[0]+"//"+index[0]+"/";
}

function loadJS(jsurl){
var script=new element("script");
script.src=jsurl;
script.onload=function(){
	}
document.documentElement.appendChild(script);
}
function loadCSS(cssurl){
var linknode=new element("link");
linknode.rel="stylesheet";
linknode.type="text/css";
linknode.href=cssurl;
document.documentElement.firstChild.appendChild(linknode);
}

String.prototype.trim = function() 
{ 
return this.replace(/(^\s*)|(\s*$)/g, ""); 
} 

String.prototype.ltrim = function() 
{ 
return this.replace(/(^\s*)/g, ""); 
} 

String.prototype.rtrim = function() 
{ 
return this.replace(/(\s*$)/g, ""); 
} 

Array.prototype.del = function(n) 
{ 
if (n<0) return this; 
return this.slice(0,n).concat(this.slice(n+1,this.length)); 
} 
// 数组洗牌 
Array.prototype.random = function() 
{ 
var nr=[], me=this, t; 
while(me.length>0) 
{ 
nr[nr.length] = me[t = Math.floor(Math.random() * me.length)]; 
me = me.del(t); 
} 
return nr; 
} 
// 数字数组排序 
Array.prototype.sortNum = function(f) 
{ 
if (!f) f=0; 
if (f==1) return this.sort(function(a,b){return b-a;}); 
return this.sort(function(a,b){return a-b;}); 
} 
// 获得数字数组的最大项 
Array.prototype.getMax = function() 
{ 
return this.sortNum(1)[0]; 
} 
// 获得数字数组的最小项 
Array.prototype.getMin = function() 
{ 
return this.sortNum(0)[0]; 
} 
// 数组第一次出现指定元素值的位置 
Array.prototype.indexOf = function(o) 
{ 
for (var i=0; i<this.length; i++) if (this[i]==o) return i; 
return -1; 
} 
// 移除数组中重复的项 
Array.prototype.removeRepeat=function() 
{ 
this.sort(); 
var rs = []; 
var cr = false; 
for (var i=0; i<this.length; i++) 
{ 
if (!cr) cr = this[i]; 
else if (cr==this[i]) rs[rs.length] = i; 
else cr = this[i]; 
} 
var re = this; 
for (var i=rs.length-1; i>=0; i--) re = re.del(rs[i]); 
return re; 
} 



function markAjax(file,Methods,fun,loading,data){
if(!Methods){Methods="post"}

if(typeof(loading)=="string"){
var w
var img=new element("img");
img.src=loading;
img.onload=function(){	
    img.onload="null";
    w=new win(img.width,img.height);
	w.bg.style.backgroundColor="#ffffff";
	w.bg.style.display="none";
	w.iframe.innerHTML="";
	img.addlast(w.iframe);
	ajax();
	}
	}
	else{
			ajax();
		}

	
	function ajax(){
			try{
var ohttp=new XMLHttpRequest();
}
catch(e){
try{
var ohttp=new ActiveXObject("microsoft.XMLHTTP");
}
catch(ee){
var ohttp=new ActiveXObject("msxml2.XMLHTTP");
}
}
ohttp.onreadystatechange=function(){
  if(ohttp.readyState==4){
    if(ohttp.status==200){
          try{w.close()}catch(e){}
		if(fun){
			fun(ohttp);
			}
		else{
			alert("not function!/n"+ohttp.responseText);
			}

    }
    else{
    alert("not file!");
	try{w.close()}catch(e){}
    }
  }
}
ohttp.open(Methods,file,"false");
ohttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
ohttp.send(data);
		}
	
}
/*
var styles={
	width:"200px",
	height:"200px",
	backgroundColor:"#00ff00",
	color:"#ffffff"
}
var atts={
    title:"0123456789",
	innerHTML:"0123456789",
	onclick:function(){
	this.addcss(styles2);
	}
}
var Layer1=new node("Layer1");//这个构造函数 可以以ID 和DOM对象作为参数
var div=new element("div");//这个构造函数 以TAGNAME 作为参数

//DOM增强类
Layer1.remove();//删除这个节点

Layer1.addfirst();//添加参数节点的第一
Layer1.addlast();//添加参数节点的最后
Layer1.addback(Layer2);//添加参数节点的后面
Layer1.addfront(Layer2);//添加参数节点的前面

Layer1.addcss(styles);//为这个接点增加CSS对象
Layer1.addatts(atts);//为这个节点增加属性对象

Layer1.getstyle();//获取这个节点的计算样式

Layer1.hide(1000,50,fun);//1秒的时间逐渐隐藏这个节点
Layer1.show(1000,50,fun);//1秒的时间逐渐显示这个节点

Layer1.setop(0.5);//设置元素透明度
Layer1.getop();//获取元素透明度

Layer1.addEvent(s,f);//第一个参数是要增加的事件 第2个参数是 function函数
Layer1.removeEvent(s,f);//第一个参数是要删除的事件 第2个参数是 function函数

Layer1.addClass();//增加类；
Layer1.removeClass();//删除类；

Layer1.getElementsByClass(className);//返回有className的元素数组；
Layer1.previousElement();//返回前面的元素；
Layer1.nextElement();//返回后面的元素；

自定义窗口类：
var w=new win("111231.html",500,500);//这个构造函数 1是要打开的页面 2 3 是宽高
w.bg
w.iframe
w.close();//本方法关闭窗口

navigator类：
//以下7个函数根据浏览器的不同返回true或者false
isie();
isie8();
isie7();
isie6();
isie5();
issf();
isff();
isop();

location类：
//返回根目录
base_url();

load类：
分别动态载入JS和CSS文件
loadJS("1.js");
loadCSS("1.css");
markAjax("1.php","post",f,"loading.gif","data=123123");
*/