По стандартным контактам - Joomla 1.5: Общие вопросы

	$script = '<!--
		function validateForm( frm ) {
			var valid = document.formvalidator.isValid(frm);
			if (valid == false) {
				// do field validation
				if (frm.email.invalid) {
					alert( "' . JText::_( 'Please enter a valid e-mail address.', true ). '" );
				} else if (frm.text.invalid) {
					alert( "' . JText::_( 'CONTACT_FORM_NC', true ). '" );
				}
				return false;
			} else {
				frm.submit();
			}
		}
		// -->';
	$document =& JFactory::getDocument();
	$document->addScriptDeclaration($script);

<label id="contact_emailmsg" for="contact_email">
				&nbsp;<?php echo JText::_( 'Email address' );?>:
			</label>
			<br />
			<input type="text" id="contact_email" name="email" size="30" value="" class="inputbox required validate-email" maxlength="100" />
			<br />