shown=''
	function OpenMaps(url) 
		{
	if( shown=='') 
		{
		shown=window.open(url,'OpenMaps','toolbar=no, location=no, status=no, menubar=yes, scrollbars=no, resizable=no, height=530, width=800');
		}
	else
		{
		shown.close();
		shown=window.open(url,'OpenMaps','toolbar=no, location=no, status=no, menubar=yes, scrollbars=no, resizable=no, height=530, width=800');
		}
	}