function ff3ix(){
 //Script to test if visitors use an older version than Firefox 3
    var ua=navigator.userAgent.toLowerCase();
    var is_ff = ua.indexOf('firefox/');
    var ff_ver_full = ua.substring(is_ff+8);
    var ff_ver_short = parseFloat(ff_ver_full);
    var ff_major = parseInt(ff_ver_short);
    var ff_minor = ff_ver_full.substring(3,2); 
 
 if (is_ff != -1 && ff_major > 2){
 // testing if UA is firefox and if its version is greater than 2 
  var navtarget=1;
  }
  else {
  var navtarget=0;
  }
  if (navtarget==1) {
	// create styled DIV with the alert
  	eDIV = document.createElement("link");
	eDIV.setAttribute("rel","stylesheet");
	eDIV.setAttribute("type","text/css");
	eDIV.setAttribute("href","ff3ix.css");
	eDIV.setAttribute("media","screen");	
	cible =document.getElementsByTagName("body")[0];
  	cible.appendChild(eDIV);
	}
}