function ValidateContactForm() { var name = document.ContactForm.name; var email = document.ContactForm.email; if (name.value == "") { window.alert("Please enter your name."); name.focus(); return false; } if (email.value == "") { window.alert("Please enter a valid e-mail address."); email.focus(); return false; } if (email.value.indexOf("@", 0) < 0) { window.alert("Please enter a valid e-mail address."); email.focus(); return false; } if (email.value.indexOf(".", 0) < 0) { window.alert("Please enter a valid e-mail address."); email.focus(); return false; } return true; }