// JavaScript Document

function mm()
 {
var nav = document.getElementById("nav").childNodes;
for(var i=0;i<nav.length;i++)
{
   if(nav[i].className=="menu")
   {
     nav[i].onmouseover = function(){fnNav(this,"block") };
	 nav[i].onmouseout = function(){fnNav(this,"none") };
   }
}
 function fnNav(obj,flag)
  {
     obj.getElementsByTagName("dl")[0].style.display = flag;
  }
}