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\" />");
	 }
}
function Reverse(elem)
{
	if (window.blockReverse==true)
	{
		window.blockReverse=false;
		return true;
	}
	if (elem.getElementsByTagName('ul').length)
		var ul = elem.getElementsByTagName('ul')[0];
	if (!ul) return;
	if (ul.style.display!= 'block')
		ul.style.display = 'block'
	else	
		ul.style.display = 'none';
}