CSS Mouseover

<!-- Left Column Begins here -->
<DIV id="lhcol">
 <DIV class="lhcont" onmouseover="this.className='lhconttableover'" onmouseout="this.className='lhcont'">
  <UL>
   <LI class="navhdr"> <A class="lhdr" title=Home accessKey=h href="index.php">EYE FLOATERS HOME</A>
   <LI>
    <UL>
     <LI class="navitem"><A class="nav" title="About this site" href="about.php"><strong>A</strong>bout</A>
     <LI class="navitem2"><A class="nav" title="Contact Us" href="contact.php"><strong>C</strong>ontact</A>
     </LI>
    </UL>
   <LI class="navhdr"><A class="lhdr" title="Guides" href="theeye.php">THE EYE</A>
    <!-- How the eye works, faq's etc -->
   <LI><a href="floaters.php" class="lhdr">FLOATERS</a>
    <!-- What floaters are, causes of floaters, treatment of floaters .. -->
   <LI><a href="articles.php" title="Articles and Further reading" class="lhdr">ARTICLES</a>
    <!-- Links to various published articles -->
   <LI><a href="bulletin/index.php" title="Eye Floaters Discussion Forum" class="lhdr">COMMUNITY FORUM</a>
    <!-- Which will then link to Contact Form and discussion group -->
   <LI><a href="links.php" class="lhdr" title="Links and Resources">LINKS</a> </UL>
  <BR>
  <DIV> </DIV>
 </DIV>
 <!-- end lhcont --><BR>

<!-- Left Column Text here -->
<div class="left_col_cont">
<p class="left_col_hdr" id=customise>&nbsp;&nbsp;»&nbsp;Customise</p>
<DIV class="mailform " onmouseover="HighlightBackground(customise, '#EDEFF8');" onmouseout="HighlightBackground(customise, '#dcdcdc');">
 <span style="color:#4393B8;font-size:x-small;font-weight:normal;padding-right:10px">Font size: </span>
 <a href="#" onclick="setActiveStyleSheet('SmallFonts'); return false;" class="SmallFonts" title="Default size Fonts">a</a>
 <a href="#" onclick="setActiveStyleSheet('MediumFonts'); return false;" class="MediumFonts" title="Medium Large Fonts">a</a>
 <a href="#" onclick="setActiveStyleSheet('LargeFonts'); return false;" class="LargeFonts" title="Large Fonts">a</a>
</div></div>
<br>
<?php
include_once "/home/floaters/public_html/poll/booth.php";
echo $php_poll->poll_process(4);
?>
</DIV>