$(document).ready(function(){$('#text_email').blur(function(){validate_email();});$('#email_form').submit(function(){return validate_email();});});function validate_email(){var address=$('#text_email').val();var pattern=/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;if(!pattern.test(address)){$('#text_email').addClass('inputerror');$('.emailerror').html('Please enter a valid e-mail address.');return false;}$('#text_email').removeClass('inputerror');$('.emailerror').html(' ');return true;}