// browser sniffing code copied & pasted from the www :-)


var agt=navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();

// *** BROWSER VERSION ***

var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);

// Note: On IE, start of appVersion return 3 or 4
// which supposedly is the version of Netscape it is compatible with.
// So we look for the real version further on in the string

var iePos  = appVer.indexOf('msie');
if (iePos !=-1) {
   is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)));
   is_major = parseInt(is_minor);
}

var is_konq = (agt.indexOf('konqueror') > -1) ? true : false;
var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
var is_khtml  = (is_safari || is_konq);

var is_gecko = ((!is_khtml)&&(navigator.product)&&(navigator.product.toLowerCase()=="gecko"))?true:false;
var is_gver  = 0;
if (is_gecko) is_gver=navigator.productSub;

var is_moz   = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
(agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
(agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1) &&
(is_gecko) &&
((navigator.vendor=="")||(navigator.vendor=="Mozilla")||(navigator.vendor=="Debian")));
if (is_moz) {
   var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0;
   if(!(is_moz_ver)) {
   is_moz_ver = agt.indexOf('rv:');
   is_moz_ver = agt.substring(is_moz_ver+3);
   is_paren   = is_moz_ver.indexOf(')');
   is_moz_ver = is_moz_ver.substring(0,is_paren);
   }
   is_minor = is_moz_ver;
   is_major = parseInt(is_moz_ver);
}

var is_firefox = (agt.indexOf("firefox") != -1);

var is_nav  = (!is_firefox 
&&(agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)
&& (!is_khtml) && (!(is_moz)));

if ((navigator.vendor)&&
((navigator.vendor=="Netscape6")||(navigator.vendor=="Netscape"))&&
(is_nav)) {
   is_major = parseInt(navigator.vendorSub);
   is_minor = parseFloat(navigator.vendorSub);
}

var is_nav6   = (is_nav && is_major==6); 
var is_nav6up = (is_nav && is_minor >= 6);
var is_nav7   = (is_nav && is_major == 7);
var is_nav7up = (is_nav && is_minor >= 7);
var is_ie   = ((iePos!=-1) && (!is_khtml));