function checkFields() {
  missinginfo = "";			

  if (document.form11.name.value == "") {
       missinginfo += "\n     Your Name";
  }
  
  if ((document.form11.email.value == "") || 
      (document.form11.email.value.indexOf('@') == -1) || 
      (document.form11.email.value.indexOf('.') == -1)) {
      missinginfo += "\n     A Valid Email address";
  }			
  
  if (document.form11.math.value == "") {
       missinginfo += "\n     Do the math please";
  }

if (missinginfo != "") {
      missinginfo ="_____________________________\n" +
      "Please enter:\n" +
      missinginfo + "\n_____________________________" +
      "\nPlease complete and submit again!";
      alert(missinginfo);
      return false;
  }
else return true;
}