You can highlight ANY text in ANY web page. Markkit is a web2.0 text highlighter. Drag'n'Drop the markkit yellow pen into your browser toolbar. Whenever you want to highlight text in a web page, click on the markkit bookmarklet. Markkit works
only with Mozilla Firefox, Opera, Google Chrome and Apple Safari.
All you have to do is drag and drop into your browser key bar! Check out Markkit's one minute video and see if this will work for you.