// JavaScript Document
var email_re = /^[\w-\.]+@[\w\.-]+[\.]{1}[\w]{2,3}$/;
function validate(form) {
  if(form.elements['txt_name'].value == '') {
	alert('Please enter your name.');
	form.elements['txt_name'].focus();
	return false;
  }
  if(form.elements['txt_email'].value == '' || !email_re.test(form.elements['txt_email'].value)) {
	alert('Please enter a valid email address.');
	form.elements['txt_email'].focus();
	return false;
  }
  if(form.elements['ta_comments'].value == '') {
	alert('Please enter a question or comment.');
	form.elements['ta_comments'].focus();
	return false;
  }
  return true;
}