<!-- shields engaged
//  SELECTED BROWSER SNIFFER COMPONENTS DOCUMENTED AT
//  http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
var nom = navigator.appName.toLowerCase();
var agt = navigator.userAgent.toLowerCase();
var is_major   = parseInt(navigator.appVersion);
var is_minor   = parseFloat(navigator.appVersion);
var is_ie      = (agt.indexOf("msie") != -1);
var is_ie4up   = (is_ie && (is_major >= 4));
var is_ie6   = ((agt.indexOf("msie 6") != -1));
var is_ie7   = ((agt.indexOf("msie 7") != -1));
var is_not_moz = (agt.indexOf('netscape')!=-1)
var is_nav     = (nom.indexOf('netscape')!=-1);
var is_nav4    = (is_nav && (is_major == 4));
var is_mac     = (agt.indexOf("mac")!=-1);
var is_gecko   = (agt.indexOf('gecko') != -1);

var is_opera = (agt.indexOf("opera") != -1);
var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);

var is_webtv = (agt.indexOf("webtv") != -1); 

//  GECKO REVISION
var is_rev=0
if (is_gecko) { temp = agt.split("rv:"); is_rev = parseFloat(temp[1]); }
// -->