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(["n01","n02","n03","n04","n05"],["d01","d02","d03","d04","d05"],"sd01","sd02");
SDmodel.sd(["n013","n014","n015","n016","n017"],["d013","d014","d015","d016","d017"],"sd01","sd02");
SDmodel.sd(["n07","n08","n09","n010","n011"],["d07","d08","d09","d010","d011"],"sd01","sd02");

SDmodel.sd(["nn01","nn02","nn03","nn04","nn05"],["dd01","dd02","dd03","dd04","dd05"],"sd01","sd02");
SDmodel.sd(["nn013","nn014","nn015","nn016","nn017"],["dd013","dd014","dd015","dd016","dd017"],"sd01","sd02");
SDmodel.sd(["nn07","nn08","nn09","nn010","nn011"],["dd07","dd08","dd09","dd010","dd011"],"sd01","sd02");
}