try{
	   document.execCommand("BackgroundImageCache", false, true);
   }catch(e){}
   
   function $(element){
	   if(arguments.length>1){
		   for(var i=0,elements=[],length=arguments.length;i<length;i++)
			   elements.push($(arguments[i]));
		   return elements;
	   }
	   if(typeof element=="string")
		   return document.getElementById(element);
	   else
		   return element;
   }
   
   var Class={create:function(){return function(){this.initialize.apply(this,arguments);}}}
   
   Object.extend=function(destination,source){
	   for(var property in source){
		   destination[property]=source[property];
	   }
	   return destination;
   }
   
   var tabMenu=Class.create();
   tabMenu.prototype={initialize:function(container,selfOpt,otherOpt){
	   this.container=$(container);
	   var selfOptions=Object.extend({fontWeight:"bold",fontSize:"12px",color:"#467C00"},selfOpt||{});
	   var otherOptions=Object.extend({fontWeight:"normal",fontSize:"12px",color:"#467C00"},otherOpt||{});
//用for迴圈得到objs陣列,主要是為了相容非IE流覽器把空白也當作子物件
		for(var i=0,length=this.container.childNodes.length,objs=[];i<length;i++){
			if(this.container.childNodes[i].nodeType==1)
				objs.push(this.container.childNodes[i]);
		}
		var tabArray=objs[0].getElementsByTagName("li");
//用for迴圈得到divArray陣列,主要是為了相容非IE流覽器把空白也當作子物件
		var divArray=new Array();
		for(i=0,length=objs[1].childNodes.length;i<length;i++){
			if(objs[1].childNodes[i].nodeType==1)
				divArray.push(objs[1].childNodes[i]);
		}
	  
		for(i=0,length=tabArray.length;i<length;i++){
			tabArray[i].length=length;
			tabArray[i].index=i;
			tabArray[i].onmouseover=function(){
  //其他選項樣式設置
			for(var j=0;j<this.length;j++){
				tabArray[j].style.backgroundPosition="-"+tabArray[j].offsetWidth+"px 0";
				for(var property in selfOptions){
					tabArray[j].firstChild.style[property]=otherOptions[property];
				}
			}
 //當前選項樣式
			this.style.backgroundPosition="0 0";
			for(var property in selfOptions){
				this.firstChild.style[property]=selfOptions[property];
/*
  注意this.style.property和selfOptions.property的用法錯誤
   style.fontWeight正確
   style["fontWeight"]正確
   style["font-weight"]錯誤
*/
			}
//隱藏其他選項
			for(j=0;j<this.length;j++){
				divArray[j].style.display="none";
			}
//顯示當前選項
			divArray[this.index].style["display"]="block";
		}
	  }
    }
  }
   
  var tab1=new tabMenu("tab_container1",{fontSize:"12px",color:"#467C00",fontWeight:"bold"},{fontWeight:"normal",color:"#666"});