function MM_goToURL() {
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

function changeLangue(source,dest)
{
var url=location.href;
var carSep="/";

url=url.replace(carSep+source+carSep,carSep+dest+carSep);

switch (dest){	
	case "fr" :
		MM_goToURL('parent',url);
		break;
	case "en" :
		MM_goToURL('parent',url);
		break;
	case "es" :
		MM_goToURL('parent',url);
		break;
	}
}