function verify() {
var themessage = "You are required to complete the following fields: ";
var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
var address = document.feedbackform.email.value;

if(reg.test(address) == false) {
themessage = "Invalid Email Address, ";
}
if (document.feedbackform.email.value=="") {
themessage = themessage + "email, ";
}
if (document.feedbackform.message.value=="") {
themessage = themessage + "message, ";
}
//alert if fields are empty and cancel form submit
if (themessage == "You are required to complete the following fields: ") {
document.feedbackform.submit();
}
else {
alert(themessage);
return false;
   }
}