function formValidation() {
    missinginfo = "";
    if (document.form1._01_Name.value=="") {
    missinginfo += "\n     - Name";
    }
    
      if (document.form1._02_Email.value=="") {
    missinginfo += "\n     - Email Address";
    }
   
    if (document.form1._03_Phone.value=="") {
    missinginfo += "\n     - Phone Number";
    }
    
       if (document.form1._04_Comments.value=="") {
    missinginfo += "\n     - Message / Comments";
    }

    if (missinginfo != "") {
    missinginfo = "The following fields are required.\n" +
    "_____________________________\n" +
    missinginfo + "\n_____________________________\n" +
    "\nPlease ensure that they're filled in and submit again.";
    alert(missinginfo);
    return false;
    }
    else return true;
    }