function bbbCheckFieldsCreate($form) {
	document.getElementById("usernameErr").style.display ='none';
	document.getElementById("meetingIdErr").style.display ='none';

	if ($form.username.value == "" || $form.username.value == null) {
		document.getElementById("usernameErr").style.display = '';
		$form.username.focus();
		return false;
	}
	else if ($form.meetingID.value == "" || $form.meetingID.value == null) {
		document.getElementById("meetingIdErr").style.display ='';
		$form.meetingID.focus();
		return false;
	}
	else
		return true;
}

function bbbCheckFieldsJoin($form) {
	document.getElementById("viewerErr").style.display ='none';
	if ($form.username.value == "" || $form.username.value == null) {
		document.getElementById("viewerErr").style.display ='';
		$form.username.focus();
		return false;
	}	
	else
		return true;
}

function bbbShowHideForms($hideForm, $showForm) {
	document.getElementById($hideForm).style.display = 'none';
	document.getElementById($showForm).style.display = '';
}

function bbbCheckCancelBtn($url, $id) {
	if (confirm("Вы уверены, что хотите закрыть текущую конференцию?")) {
		location.href = $url + '&closeId=' + $id;
	}
}