function formIsValid() {
	// check to make sure a valid username has been entered
	if ( document.chatLoginForm.username.value == "" ) {
		alert('Ju lutem shkruani emrin');
		return false;
	}

	return true;
}

// a small poupup window to show who's in the chat at the current time
function showInfo() {
	// the size of the popup window
	var width = 400;
	var height = 300;

	// the x,y position of the popup window
	// NOTE: this formula will auto-center the popup on the screen
	var y = (screen.height - height) / 2;
	var x = (screen.width - width) / 2;

	var url = "/chat/info.php";
	var options = "width=" + width + ",height=" + height + ",top=" + y + ",left=" + x + ",resizable";

	// open the info window as a popup, instead of embedded in webpage
	window.open( url, "info", options );
}

function popupLogin() {
	// check to make sure a valid username has been entered
	if (!formIsValid()) return;

	var username = document.chatLoginForm.username.value;
	var password = ''; //document.chatLoginForm.password.value;
	var lang = 'en'; //document.chatLoginForm.lang.value;

	// the size of the popup window
	var width = 800;
	var height = 600;

	// the x,y position of the popup window
	// NOTE: this formula will auto-center the popup on the screen
	var y = (screen.height - height) / 2;
	var x = (screen.width - width) / 2;

	var url = "/chat/flashchat.php?username=" + username + "&password=" + password + "&lang=" + lang;
	var options = "width=" + width + ",height=" + height + ",top=" + y + ",left=" + x + ",resizable";

	// open the chat window as a popup, instead of embedded in webpage
	window.open( url, "chat", options );
}