var isNN = (navigator.appName.indexOf("Netscape")!=-1); 
function MM_autoTab(input, len, e) { 
  var keyCode = (isNN) ? e.which : e.keyCode; 
  var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46]; 
  if(input.value.length >= len && !containsElement(filter,keyCode)) 
  { 
    input.value = input.value.slice(0, len); 
    input.form[(getIndex(input)+1) % input.form.length].focus(); 
  } 

  function containsElement(arr, ele) { 
    var found = false, index = 0; 
    while(!found && index < arr.length) 
    if(arr[index] == ele) 
      found = true; 
    else 
      index++; 
    return found; 
  } 

  function getIndex(input) { 
    var index = -1, i = 0, found = false; 
    while (i < input.form.length && index == -1) 
      if (input.form[i] == input)index = i; 
      else i++; 
    return index; 
    } 
  return true; 
} 

function XPUpdateWrite(str)
{
	document.write(str);
}