function activateMenu(menu_item) {

    /* currentStyle restricts the Javascript to IE only */
	if (document.all && document.getElementById(menu_item).currentStyle) {  
        var navroot = document.getElementById(menu_item);
        
        /* 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('menu_item'); 
}

function popup_display(url,pagetitle){
	var popup = window.open(url, pagetitle, "width=450,height=560,location=no,menubar=no,resizable=yes,status=no,scrollbars=yes,top=0,left=0");	
	return popup.focus();
}
function popup_timezone(url,pagetitle){
	var popup = window.open(url, pagetitle, "width=420,height=525,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no");
	return popup.focus();
}