// JavaScript Document
$(function() {
		   
	var emailIsValid = false;
	
	$('#newsletter_email').focus(function(){
		$(this).css({backgroundColor:"#FFFFCC"});
	});
	$('#newsletter_email').blur(function(){
		$(this).css({backgroundColor:"#FFFFFF"});
	});
	
	$("#subscribe_button").attr("disabled","disabled");
		   	
	$("input#newsletter_email").keyup(function(){

		var email = $(this).val();
			if(email != ""){
				if(isValidEmailAddress(email)){
					emailIsValid = true;
				} else {
					emailIsValid = false;
				}
			} else {
				emailIsValid = false;
			}
			
	});
		
	
	$("form#newsletter_form").keyup(function(){
		if (emailIsValid) {
			$("#subscribe_button").removeAttr("disabled");
		}else{
			$("#subscribe_button").attr("disabled","disabled");
		}
	});
																								  
});
function isValidEmailAddress(emailAddress) {
var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
return pattern.test(emailAddress);
}