// JavaScript Document
function displayItem(itemno, maxnr) {
//first hide it all
			var maxitems=maxnr;
			for (var i=0;i<maxitems;i++){
			setdisplay(i,"none");
			}
			
//then display selected item
setdisplay(itemno,"block");
}

function setdisplay(itno,dtype) {
            var typedis = dtype;
			var itnr = itno;
			var pix = "submenu" + itnr;
			document.getElementById(pix).style.display = typedis;
			var hdg = "hdg" + itnr;
			document.getElementById(hdg).style.display = typedis;
}

 function retrieveItem(noItems)
  {
	entryItem=0;  
	var query = window.location.search.substring(1);
	var parms = query.split('&');

	for (var i=0; i<parms.length; i++) {
		var pos = parms[i].indexOf('=');
		if (pos > 0) {
			var key = parms[i].substring(0,pos);
			var val = parms[i].substring(pos+1);
			entryItem=val;
		}

		displayItem(entryItem,noItems)

	}
}