Remove MS Office generated guff in JavaScript

function cleanHTML(input) {

  // 1. remove line breaks / Mso classes

  var stringStripper = /(n|r| class=(")?Mso[a-zA-Z]+(")?)/g;

  var output = input.replace(stringStripper, ' ');

  // 2. strip Word generated HTML comments

  var commentSripper = new RegExp('<!--(.*?)-->','g');

  var output = output.replace(commentSripper, '');

  var tagStripper = new RegExp('<(/)*(meta|link|span|\?xml:|st1:|o:|font)(.*?)>','gi');

  // 3. remove tags leave content if any

  output = output.replace(tagStripper, '');

  // 4. Remove everything in between and including tags '<style(.)style(.)>'

  var badTags = ['style', 'script','applet','embed','noframes','noscript'];

  for (var i=0; i< badTags.length; i++) {

    tagStripper = new RegExp('<'+badTags[i]+'.*?'+badTags[i]+'(.*?)>', 'gi');

    output = output.replace(tagStripper, '');

  }

  // 5. remove attributes ' style="..."'

  var badAttributes = ['style', 'start'];

  for (var i=0; i< badAttributes.length; i++) {

    var attributeStripper = new RegExp(' ' + badAttributes[i] + '="(.*?)"','gi');

    output = output.replace(attributeStripper, '');

  }

  return output;

}