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.$(menus[j]).className = closeClass;
				    _this.$(divs[j]).style.display = "none";
			    }
			    _this.$(menus[this.value]).className = openClass;	
			    _this.$(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(["m01","m02","m03","m04","m05"],["c01","c02","c03","c04","c05"],"sd01","sd02");
}