// JavaScript Document

startList = function() {
			
	if (document.all && document.getElementById) {
				
		navRoot = document.getElementById("main_nav");
					
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
						
			var lis = navRoot.getElementsByTagName("LI");  
			for (i=0; i<lis.length; i++) {
			
			   /* If the LI has another menu level */
				if(lis[i].lastChild.tagName=="UL"){
				
					/* assign the function to the LI */
					lis[i].onmouseover=function() {	
					
					   /* display the inner menu */
					   this.lastChild.style.display="block";
					}
					lis[i].onmouseout=function() {                       
					   this.lastChild.style.display="none";
					}
				}
			}
		}
	}
}

window.onload = startList;