function fillSubmenu() {
    var hoofdmenu = document.getElementById('menu');
    var els = hoofdmenu.getElementsByTagName('li');
    var elsLen = els.length;
    var pattern = new RegExp('li-current');
    for (i = 0, j = 0; i < elsLen; i++) {
                           
         if ( pattern.test(els[i].className) ) {
         	var gevonden = els[i].getElementsByTagName('ul');
     		if(gevonden[0])
     		{
     			var gevondenB = gevonden[0].innerHTML;    	         	
             		document.getElementById('submenu_container').innerHTML='<ul>'+gevondenB+'</ul>';
             		return true;
             	}
         }
    }
    
    if (/catalog.cgi/.test(location.href)) {
    	document.getElementById('submenu_container').style.display='none';
    	document.getElementById('online_catalogus').className='notop';
    }
        
  }