function Change(obj)
{
		if(document.getElementById(obj).style.display != "block")
		{
			document.getElementById(obj).style.display = "block";
		} else {		
			document.getElementById(obj).style.display = "none";
		}
}

function openMenu(obj) 
{
	 if (navigator.userAgent.indexOf("Opera")<0) {
			document.write ("<link rel=\"stylesheet\" type=\"text/css\" media=\"screen\" href=\"include/styles_"+obj+".css\" />");
	 }
}