title: Pure Javascript table column hover effect?
body: <p>I need a pure Javascript (no jQuery) hover effect for HTML table columns.</p>
  
  <p>I found <a href="https://stackoverflow.com/questions/1553571/html-hover-table-column">this</a> which supposedly contains a fix for Firefox yet it still looks broken to me.</p>
  
  <p>I found <a href="http://forums.htmlhelp.com/index.php?showtopic=601" rel="nofollow noreferrer">this</a> which works only for the first column.</p>
  
  <p>Unfortunately, my Javascript skills are amateur at best, so my attempts to modify either of these turned out to be fruitless.</p>
  
  <p>Is this possible?  Any suggestions would be appreciated. </p>