function ValidateForm(){

    var name = document.optin.name;
    var namefilter = /^([a-zA-Z0-9])+$/;
    if (!namefilter.test(name.value)) {
       alert('Please provide a valid name');
       name.focus
       return false;
			 }

    var email = document.optin.email;
    var emailfilter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
    if (!emailfilter.test(email.value)) {
       alert('Please provide a valid email address');
       email.focus
       return false;
       }
 }