var noOfmenuItem = 16;
  var menuHomeURL = "http://www.cityu.edu.hk/cityu/";
  
 
  function build_url(url){
     if (url.substr(0,5) == "http:"){ return url;}
     else if (url.substr(0,1) == "/"){ return "http://www.cityu.edu.hk" + url;}
     else {return menuHomeURL + url;}
  }

  function highlight_option(id){
        var i,menuid;
        for (i=1; i<=noOfmenuItem; i++){
            menuid="menu"+i;
            document.getElementById(menuid).className='menuItem';
		}
		if (id != ''){ document.getElementById(id).className='highlightMenu';}
  }

  function init_l2Menu(itemNo, homeFolder){
    noOfmenuItem = itemNo;
    menuHomeURL = "http://www.cityu.edu.hk/cityu/" + homeFolder + "/"
    try{
        var i,menuid;
        for (i=1; i<=noOfmenuItem; i++){
            menuid="menu"+i;
	        if (parent.main.location == build_url(document.getElementById(menuid+'a').getAttribute('href'))){
	            highlight_option(menuid);
	        }
        }
        if (parent.main.location == build_url(document.getElementById('menu0a').getAttribute('href'))){
	        highlight_option('');
	    }

    }
    catch(e){
    }
  }