ive found this code which can be used in html, could this be used in script
in excel?

function getKeywords () {
 var metaElements = document.all ?
   document.all.tags('META') :
   document.getElementsByTagName ?
   document.getElementsByTagName ('META') : new Array();
 var metaKeywords = new Array();
 var i = 0;
 for (var m = 0; m < metaElements.length; m++)
   if (metaElements[m].name == 'keywords')
     metaKeywords[i++] = metaElements[m].content;
 return metaKeywords;