function isEmail(incoming) {
  var email_regex = /^[^\@\s]+\@[A-Za-z0-9\-]{1}[.A-Za-z0-9\-]+\.[.A-Za-z0-9\-]+$/;
  return email_regex.test(incoming);
}

function isInt(myVal) {
  return (parseInt(myVal) == myVal);
}

function trim(inputString) {
  if (typeof inputString != "string") { return inputString; }
  var retValue = inputString;
  var ch = retValue.substring(0, 1);
  while (ch == " ") {
    retValue = retValue.substring(1, retValue.length);
    ch = retValue.substring(0, 1);
  }
  ch = retValue.substring(retValue.length-1, retValue.length);
  while (ch == " ") {
    retValue = retValue.substring(0, retValue.length-1);
    ch = retValue.substring(retValue.length-1, retValue.length);
  }
  while (retValue.indexOf("  ") != -1) {
    retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
  }
  return retValue;
}