/**
 * Function that opens a popup window which will show the "Send to a friend" window
 * lang: the language in which to show the popup ("en" or "fr")
 * url: OPTIONAL: The URL to send when we do the "send to a friend". If not set, the referrer address will be used (this page)
 */
function popupfriend(lang, url) {
	var popupURL = (lang == "fr" ? "envoyerauxamies.php" : "sendtofriends.php");
	if(url) {
		popupURL += "?URL=" + url;
	}
	var win = window.open(popupURL, "sendtofriends", "width=400,height=410");
}