// JScript File

var isNN = (navigator.appName.indexOf("Netscape")!=-1);

/* Numeric only input */
function NumericInputOnly( obj, event ) { 
    var curChar    = String.fromCharCode( event.keyCode ); 
    var inpStr     = obj.value + curChar 
    window.status  = '';
    obj.title      = '';

    result = inpStr.match( '^[0-9]+$' );
    if ( ! result ) {
        window.status     = 'Please enter only numbers.';
        obj.title         = window.status;
        event.returnValue = false;
        event.cancel      = true; 
    }
}

/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com */

function 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;
}