//heavyImage1 = new Image(); 
//heavyImage1.src = "image/bitaoti_white_2_07.gif"; 
//heavyImage2 = new Image(); 
//heavyImage2.src = "image/biaoti_bule_09.gif"; 
//alert(heavyImage1.src);
function scrollDoor(){
}
scrollDoor.prototype = {
	sd : function(menus,divs,openClass,closeClass){
		var _this = this;
		if(menus.length != divs.length)
		{
			alert("菜单层数量和内容层数量不一样!");
			return false;
		}				
		for(var i = 0 ; i < menus.length ; i++)
		{	
			_this.$(menus[i]).value = i;				
			_this.$(menus[i]).onmouseover = function(){
					
				for(var j = 0 ; j < menus.length ; j++)
				{						
					_this.$(menus[j]).className = closeClass;
					//_this.$(menus[j]).style.background="url('"+heavyImage1.src+"')";
					_this.$(divs[j]).style.display = "none";
				}
				_this.$(menus[this.value]).className = openClass;
				//_this.$(menus[this.value]).style.background="url('"+heavyImage2.src+"')";
				_this.$(divs[this.value]).style.display = "block";				
			}
		}
		},
	$ : function(oid){
		if(typeof(oid) == "string")
		return document.getElementById(oid);
		return oid;
	}
}
window.onload = function(){
	var SDmodel = new scrollDoor();
	SDmodel.sd(["bg1","bg2","bg3","bg4","bg5","bg6","bg7"],["main1","main2","main3","main4","main5","main6","main7"],"new_bg2","new_bg1");
	//SDmodel.sd(["mm01","mm02","mm03","mm04","mm05"],["cc01","cc02","cc03","cc04","cc05"],"sd01","sd02");
	//SDmodel.sd(["mmm01","mmm02","mmm03","mmm04","mmm05"],["ccc01","ccc02","ccc03","ccc04","ccc05"],"sd01","sd02");
}