function verify() {
var themessage = "You are required to complete the following fields:\n ";
if (document.form1.first_name.value=="") {
themessage = themessage + "- First Name" + "\n";
}
if (document.form1.last_name.value=="") {
themessage = themessage + " - Last Name" + "\n";
}
if (document.form1.email.value=="") {
themessage = themessage + " - Email" + "\n";
}


//alert if fields are empty and cancel form submit
if (themessage == "You are required to complete the following fields:\n ") {
document.form1.submit();
}
else {
alert(themessage);
return false;
   }
}