activateMenu = function(nav) {
	/* currentStyle restricts the Javascript to IE only */
	if (document.all && document.getElementById(nav).currentStyle) {  
        	var navroot = document.getElementById(nav);
        
        	/* Get all the list items within the menu */

	        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= function(){
    /* pass the function the id of the top level UL */
    /* remove one, when only using one menu */
    //activateMenu("hmenu"); 
    activateMenu("vmenu"); 
    activateMenu("amenu"); 
}