browser_version= parseInt(navigator.appVersion);
browser_type = navigator.appName;
IE6=(navigator.userAgent.toLowerCase().indexOf('msie 6') != -1) && (navigator.userAgent.toLowerCase().indexOf('msie 7') == -1);
//IE6 = false;
//now test for ie 6
if (IE6){
document.write("");
}
else if (browser_type == "Microsoft Internet Explorer" && (browser_version >= 4))
{
document.write("");
}
else if (browser_type == "Netscape" && (browser_version >= 4))
{
document.write("");
}