document.observe("dom:loaded", function() {
										
	  $('frmContact').onsubmit = function() {
			if (!$('txtName').value) {
				alert('Please provide your name');
				return false;
			} else if(!$('txtEmail').value) {
				alert('Please provide your email address');
				return false;
			} else if (!$('txtComments').value) {
				alert('Please provide your comments');
				return false;
			} else {
				return true;
			}
		}
		
});