<!-- hide script from old browsers
function isEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}
function validate_contact(){
	if (contact_form.sender_name.value=='' || contact_form.sender.value=='' || contact_form.subject.value=='' || contact_form.comment.value==''){
		alert('Please complete all details.');
		return false;
	}
	if (!isEmail(contact_form.sender.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	
	return true;
}
function validate_vip(){
	if (vip_signup.name.value=='' || vip_signup.email.value==''){
		alert('Please enter your name and email address');
		return false;
	}
	if (!isEmail(vip_signup.email.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	return true;
}
function validate_caption(){
	if (caption.user_name.value=='' || caption.user_email.value=='' || caption.comment_body.value==''){
		alert('Please complete all details.');
		return false;
	}
	if (!isEmail(caption.user_email.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	return true;
}
function validate_comp(){
	if (entryform.realname.value=='' || entryform.address.value=='' || entryform.phone.value=='' || entryform.email.value==''){
		alert('Full Name, Complete Address, Contact Phone and Email are all required');
		return false;
	}
	if (!isEmail(entryform.email.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	
	return true;
}
function validate_hdcom(){
	if (hd_comment.user_name.value=='' || hd_comment.user_email.value=='' || hd_comment.comment_body.value==''){
		alert('Please complete all details.');
		return false;
	}
	if (!isEmail(hd_comment.user_email.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	
	return true;
}
function validate_hd(){
	if (query.hd_fname.value=='' || query.hd_lname.value=='' || query.hd_email.value=='' || query.hd_question.value==''){
		alert('Please complete all details.');
		return false;
	}
	if (!isEmail(query.hd_email.value)){
		alert('Please enter a valid email address.');
		return false;
	}
	
	return true;
}
// end hiding script from old browsers -->