function validate()
{
	if(document.contact_form.name.value=='')
	{
		alert("Please enter your name.");
		document.contact_form.name.focus();
		return false;
	}

	if(document.contact_form.email.value=='')
	{
		alert("Please enter your e-mail address.");
		document.contact_form.email.focus();
		return false;
	}

if (document.contact_form.email.value != "") {
	 var emailVal  = true;
 	 var Temp     = document.contact_form.email;
	 var atSign    = Temp.value.indexOf('@');
	 var dot   = Temp.value.lastIndexOf('.');
	 var space    = Temp.value.indexOf(' ');
	 var length   = Temp.value.length - 1;
        if (atSign < 1 | dot <= atSign+1 | dot == length  | space  != -1) {
            emailVal = false;
            alert("Please enter a valid e-mail address.");
            document.contact_form.email.select();
            return false;
     }
   }


	if(document.contact_form.yourcomments.value=='')
	{
		alert("Please enter your comments.");
		document.contact_form.yourcomments.focus();
		return false;
	}

	return true;
	
}

$(function() {
	 $('.error').hide();
  
	$(".btnjoin").click(function() {
  $('.error').hide();
  
		var email = $("input#email").val();
		if (email == "") {
      $("label#email_error").show();
      $("input#email").focus();
      return false;
    }
		
		var dataString = 'email=' + email;
		//alert (dataString);return false;
		
		$.ajax({
      type: "POST",
      url: "process.php",
      data: dataString,
      success: function() {
       $("label#success_message").show();
      }
     });
    return false;
	});
});