function browserDetect(){

var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var browserName  = navigator.appName;
var fullVersion  = ''+parseFloat(navigator.appVersion); 
var majorVersion = parseInt(navigator.appVersion,10);
var nameOffset,verOffset,ix;
var flag = false;

if(browserName.indexOf('Microsoft Internet Explorer') >= 0){
   var ind = (nAgt.indexOf('MSIE')+5);
   if(((ind+1) < nAgt.length)&&(ind >= 5)){
    var bsVersion = parseInt(nAgt.substring(ind, ind+1));
    if(!isNaN(bsVersion)){
     ieVersion = bsVersion;
     if(ieVersion < 7){
      	flag = true;
     }
    }
   }
  }
  // In Firefox, the true version is after "Firefox" 
else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {
 browserName = "Firefox";
 var fullVersion = parseInt(nAgt.substring(verOffset+8));
 	
 if(!isNaN(fullVersion)){
	version = fullVersion;	
	if(version < 3){
		flag = true; 	
	}
 }
 
}

return flag;
}