var  Nav_ver=0,Nav=0;
function detect_browser()
{
Nav_ver=parseInt(navigator.appVersion);if (Nav_ver<4){document.write("<META HTTP-EQUIV=\"REFRESH\" CONTENT=\"0; URL=oldbrowser.htm\">");top.location.href="oldbowser.htm";return 0}	if (navigator.appName=="Netscape") Nav="N";	if (navigator.appName=="Microsoft Internet Explorer") Nav="E";
/*if(parent.frames.length > 0){top.location.href="index.html";}*/
}
detect_browser();