var $ = YAHOO.util.Dom.get;

function initRegister() {
	var updateUsername = function() {
		var givenName = $("form-givenName").value;
		var familyName = $("form-familyName").value;
		
		if (givenName.length > 0 && familyName .length > 0) {
			var username = "" + givenName.substring(0, 1) + " " + familyName;
			username = username.toLowerCase();
			username = username.replace(/\s/g, "");
			$("form-username").value = username;
		}
	};
	
	YAHOO.util.Event.on("form-givenName", "change", updateUsername);
	YAHOO.util.Event.on("form-familyName", "change", updateUsername);
}