function send_email() {
	if (document.email_form.email.value!="") {
		if(isValidEmailAddress(document.email_form.email.value)) {
			$.ajax({
			   type: "POST",
			   url: "ajax.php",
			   data: "email="+document.email_form.email.value,
			   dataType: "json",
			   success: function(data){
					switch(data.the_status) {
						case "success":
							$("#header-left").html('<p>Thanks for signing up! Now come and enjoy a hot pizza!</p>');
						break;
					}
			   }
			 });
		} else {
			alert('Please enter a valid email address.');
		}
	} else {
		alert('Please enter your email address.');
	}
}

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);
}

$(document).ready(function() {	
	$("#form-email").focus(function(){
	    this.select();
	});
});