/* 
十三�?
qq:181907667 
msn:wl181907667@hotmail.com 
邮箱:thirdteendevil@163.com 
*/ 
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�?"); 
            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; 
    } 
}