HELP, script Options

[xsittingxduckx]

im tryin to change text but the script confuses me..... is this right?

<script type="text/javascript">
//
// &amp;copy; EasterEgg, http://www.xanga.com/easteregg
//
// For use at Xanga only.
//
// This script replaces any given word or text fragment with
// whatever you want: new words and fragments, or even HTML!
//
// Actually it's pretty simple: add the words or fragments you
// wish to replace to the array "oldWords" (each word placed
// between double quotation marks, and separated by colons as you
// can see below) and add their replacements to the array "newWords",
// at the same position as the original words in "oldWords".
// The example is pretty self-explaining.
//
// The script is case sensitive, meaning that if you add "something"
// to "oldWords" array it will not recognize "SOMETHING", or "SoMetHInG".
//
// You can adjust the existing arrays in this code as you see fit,
// as long as both arrays keep the same size (same amount of words
// in both arrays), otherwise a script error will occur.
//
// Copy this entire code and paste in the webstats box at your
// Look and Feel page.
//
// You're free to use this script as long as this comment remains intact,
// and as long you won't use it to cripple the comments of your visitors;
// after all, no one likes his/her words getting twisted...
//
function replaceWords()
{
   // ***add the words or fragments you wish to replace below
   var oldWords = new Array(
       "Subscriptions",
       "sign my guestbook",
       "My Blogrings",
       "Posting Calendar",
       "Birthday:",
       "Gender:",
       "Member since:");
    // *** add the replacing words or fragments below
   var newWords = new Array(
       "Chains",
       "Hit me up female dog",
       "This Thing",
       "Backwards ro Forwards?",
       "Born:",
       "Female:",
       "Died:");
   allTableData = document.getElementsByTagName('td');
   allTableHeaders = document.getElementsByTagName('th');
       
   var collections = new Array(allTableData,allTableHeaders);
   
   for (var k = 0; k < collections.length; ++k )
   {
       for (var i = 0; i < collections[k].length; ++i )
       {  
           if (collections[k][i].innerHTML.indexOf('TABLE') == -1)
           {
               for ( var n = 0; n < oldWords.length; ++n )
               {
                   var indx = collections[k][i].innerHTML.indexOf(oldWords[n])
                   while (indx != -1)
                   {  
                       var replacement = '';
                       indx = collections[k][i].innerHTML.indexOf(oldWords[n]);
                       replacement = collections[k][i].innerHTML.replace(oldWords[n], newWords[n]);
                       collections[k][i].innerHTML = replacement;
                       break;                    
                   }
               }
           }
       }
   }
}
replaceWords();
</script>