/************************************************
* Validate part numbers scripts - 06/08/2005
* Patrick Strahm - Multi-Contact USA
************************************************/

function check(thisField) {
  var ValidChars = "0123456789";
  var Char;
  Char = thisField.value.charAt(thisField.value.length-1); 
  if (ValidChars.indexOf(Char) == -1) thisField.value = thisField.value.substr(0, thisField.value.length-1);
  if (thisField.value.length >= thisField.maxLength) document.getElementsByTagName('input')['two'].focus();
}