function transen(Lang){
	var url=window.location.href;
	if( url.search('translate.google') !=-1){	
		alert('You are already using the English version.');
		}
	else{
		var Newurl='http://translate.google.fr/translate?hl=fr&sl=fr&tl='+Lang+'&u='+url;
		window.open(Newurl);
		}
	}