function toggleMenuItem(item, state)
{
  item.className = state;
}
function showInfo(url)
{
	var w = 500;
	var h = 600;
	var x = (screen.width - w) / 2;
	var y = (screen.height - h) / 2;
	window.open(url,"","width="+w+",height="+h+",left="+x+",top="+y+",scrollbars=yes");
}