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