// JavaScript Document
function horizontal() {
var navItems = document.getElementById("menu_dropdown").getElementsByTagName("li");
	for (var i=0; i< navItems.length; i++) {
		if(navItems[i].className == "submenu"){
			if(navItems[i].getElementsByTagName('ul')[0] != null){
				navItems[i].onmouseover=function() {this.getElementsByTagName('ul')[0].style.display="block";}
				navItems[i].onmouseout=function() {this.getElementsByTagName('ul')[0].style.display="none";}
			}
		}
	}
}