var prev="null";

window.onload=function()
{        
    if(document.getElementsByTagName && document.getElementById)
    {
        document.getElementById("MenuView").className="jsenable";
        BuildList();
    }
}

function BuildList()
{
       
    var hs=document.getElementById("MenuView").getElementsByTagName("h4");
    for(var i=0;i<hs.length;i++)
    {
        hs[i].onclick=function()
        {
            if (this.parentNode.className!="show")
            {
                this.parentNode.className="show";
                if (prev && prev!=this.parentNode) prev.className="hide";
                prev=this.parentNode;
            }
            else this.parentNode.className="hide";
        }
    }
   
}