function poboxcheck() {
	
  var regexvalue = "(?i)^((?<!P\\.?\\s?O\\.?\\sBox).)+(?<!P\\.?\\s?O\\.?\\sBox)$";
  var re = new RegExp(regexvalue);
  if ($('SID1_Street').value.match(re)) {
    alert("You can not use PO Box Address for Physical Addresses.  Please use your physical address.");
	return false;;
  } else {
    alert("No match");
  }
}