function emailCheck() { var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/; var address = document.form2.s_email.value; if (document.form2.s_email.value=="") { alert("Please enter your email address.");document.form2.s_email.focus();return false; } if(reg.test(address) == false) {
alert('Please enter the valid Email Address'); document.form2.s_email.focus();return false; } }