function changeLink(id, obj, title) { 
	var link = document.getElementById(obj);
	var menu = document.getElementById(id);
	var linkTitle = document.getElementById(title);
	
	if(link.className=="closed"){
		menu.className="show";
		link.className="open";
	} 
	else if(link.className=="open"){
		menu.className="hide";
		link.className="closed";
	}
}