gistfile1.txt

(function(){
$('link[rel="stylesheet"]').each(function(i, elem) {
  //  Make an anchor tag with the stylesheet's href -- this is a weird/handy way of
  //  working with URLs in the browser.
  var anchorTag = $('a').attr('href', elem.getAttribute('href'))[0];

  // Rewrite the URL to have a cache busting parameter. This assumes
  // that any query params weren't significant.
  anchorTag.search = "ts=" + (+new Date);
  
  //  Update the stylesheet link
  elem.href = anchorTag.href;
})  
})()

// Bookmarklet version (made using http://userjs.up.seesaa.net/js/bookmarklet.html)
javascript:(function(){$('link[rel="stylesheet"]').each(function(i,elem){var anchorTag=$('a').attr('href',elem.getAttribute('href'))[0];anchorTag.search="ts="+(+new Date);elem.href=anchorTag.href;})})()