function AddHomePage(obj,sUrl) {
      	if ((navigator.appName.indexOf("Microsoft",0)>=0) && (parseInt(navigator.appVersion)>=4)) {
      		obj.style.behavior='url(#default#homepage)';
      		obj.setHomePage(sUrl);
      	}
      	else {
      		alert("Only available for Internet Explorer 4+.")
	}
}

function AddFavoris() {
      	if(window.confirm("Click OK to add this page on your bookmarks")) {
      		if ((navigator.appName.indexOf("Microsoft",0)>=0) && (parseInt(navigator.appVersion)>=4)) {
			window.external.AddFavorite(location.href, document.title);
		} else {
			AjoutFavorisFirefox(location.href, document.title);
		}
      	}

}

// verifiermail(mail)
     function verifiermail(mail) {
      if ((mail.indexOf('@')>=0)&&(mail.indexOf('.')>=0)) {
         return true
      } else {
         alert('Yoour email seems to be wrong ?!');
         return false
      }
   }