$(document).ready(function(){
  $('#btnGo').click(function(e) {
    $("div#dialog").dialog("destroy");
	e.preventDefault();
	var txtNewsEmail = $("#txtEmail"),
		tips = $("#errorNews");
		tips.text('');
	
	function updateTips(t) {
			tips.text(t)};
			
	function checkRegexp(o,regexp,n) {

			if ( !( regexp.test( o.val() ) ) ) {
				//o.addClass('ui-state-error');
				updateTips(n);
				return false;
			} else {
				return true;
			}
    }

	function checkLength(o) {
				if (o.val().length == 0 ) {
				updateTips("An email address is required.");
				return false;
			} else {
				return true;
			}
    }
						   
	var bValid = true;
	bValid = bValid && checkLength(txtNewsEmail);
	bValid = bValid && checkRegexp(txtNewsEmail,/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i,"A valid email address is required.");
	
	if (bValid) {
				$.ajax({
					url:"/testUK.asp",
					data:"txtNewsEmail="+$(txtNewsEmail).val(),
					success: function(response){ 
							$(txtNewsEmail).val('');
							tips.text('');
							$("div#dialog").dialog({
								autoOpen: false,
								height: 250,
								modal: true,
    							resizable: false,
								draggable: true,
			 					buttons: {
					    					'Close': function() {
											$(txtNewsEmail).val('');
		 			    					$(this).dialog('close');

     				  						}
   					 					  }

							});
							$('div#dialog').html('<p>Thank you for registering!</p>');
							$('div#dialog').dialog('open');
					},
					error: function(response) {alert(response)}
				  });
				}
	
		
    });
});