function Log_Out()
{
	ht = document.getElementsByTagName("html");
	ht[0].style.filter = "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
	if (confirm('ÄãÈ·¶¨ÒªÍ˳öÂð£¿'))
	{
		window.location.href="LoginOut.asp";
	}
	else
	{
		ht[0].style.filter = "";
		return false;
	}
}