$(document).ready(function(){var defaultMsg="my.address@email.com";var txtBox=$(".addy");var txtVal=$(txtBox).val();var txtLen=txtVal.length;$(".btnSubmit").hide();$(txtBox).focus(function(){if($(this).val()==defaultMsg){$(this).val("");}});$(txtBox).blur(function(){if($(this).val()==""){$(this).val(defaultMsg);$(".btnSubmit").attr("disabled","disabled");$(".btnSubmit").slideUp();}});$(txtBox).keyup(function(){if(($(this).val()=="")||($(this).val()==defaultMsg)||!checkEmail($(this).val())){$(".btnSubmit").attr("disabled","disabled");$(".btnSubmit").slideUp();}else{$(".btnSubmit").removeAttr("disabled");$(".btnSubmit").slideDown();}});});function checkEmail(address){if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(address)){return(true);}return(false);}