$(document).ready(function(){

/* 	Remove default value from form inputs */
	$("input.ready").live('click', function(event){
    	$(this).val("").removeClass("ready");
   });

/* 	Validate email address on submit */
	$("#newsletter-form").submit(function(){

		var email = $("#newsletter-email").val();
		
		if(email != 0) {
			if(isValidEmailAddress(email)) {
				/* do something */
				} else {
					$("#newsletter-form .alert").css({"display":"block"}); return false;
				}
			} else {
					$("#newsletter-form .alert").css({"display":"block"}); return false;
			}
		});

/* 	Check that email address is valid */
	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);
	}

});