var menuids=["treemenu1"] 

function buildsubmenus_horizontal()
{
	for (var i=0; i<menuids.length; i++)
	{
  		var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul")
  		
    	for (var t=0; t<ultags.length; t++)
		{
			if (ultags[t].parentNode.parentNode.id==menuids[i])
			{ //if this is a first level submenu
				ultags[t].style.top=ultags[t].parentNode.offsetHeight+"px" //dynamically position first level submenus to be height of main menu item
				ultags[t].parentNode.getElementsByTagName("a")[0].className="mainfoldericon"
			}
			else
			{ //else if this is a sub level menu (ul)
		  		ultags[t].style.left=ultags[t-1].getElementsByTagName("a")[0].offsetWidth+"px" //position menu to the right of menu item that activated it
    			//ultags[t].parentNode.getElementsByTagName("a")[0].className="subfoldericon"
				ultags[t].parentNode.getElementsByTagName("a")[0].className="mainfoldericon1"
			}
			
    		ultags[t].parentNode.onmouseover=function()
			{
    			this.getElementsByTagName("ul")[0].style.visibility="visible"
    		}
    		
			ultags[t].parentNode.onmouseout=function()
			{
    			this.getElementsByTagName("ul")[0].style.visibility="hidden"
    		}
    }
  }
}

if (window.addEventListener)
{
	window.addEventListener("load", buildsubmenus_horizontal, false)
}
else if (window.attachEvent)
{
	window.attachEvent("onload", buildsubmenus_horizontal)
}