function changeBg(){
var myurl = String(document.location);
var where = myurl.indexOf('?')
var highlightme;
var fromhere = where+1;
if(fromhere == 0){
 return;
}else{
	highlightme = myurl.substring(fromhere);
	var el = document.getElementById(highlightme);
	el.className = "cntyColour";
	}
}