Conflict with Facebook "like" plugin?

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<ul id="MenuBar1" class="MenuBarVertical">
<li><a  href="aboutus.php">About Us</a> </li>
      
<li>
      <a href="#" class="MenuBarItemSubmenu">Available homes</a>

                	<ul>
       <!-- start dynamic list -->
         
              
                            <li><a href="inventory.php?invtype=35">Brainerd, MN</a></li>
                              <li><a href="inventory.php?invtype=5">Chillicothe, MO</a></li>
                              <li><a href="inventory.php?invtype=10">Gillette, WY</a></li>
                              <li><a href="inventory.php?invtype=7">Kearney, NE</a></li>
                              <li><a href="inventory.php?invtype=1">LeMars, IA</a></li>

                              <li><a href="inventory.php?invtype=6">Minot, ND</a></li>
                              <li><a href="inventory.php?invtype=11">Pierre, SD</a></li>
                              <li><a href="inventory.php?invtype=8">Rapid City, SD</a></li>
                              <li><a href="inventory.php?invtype=4">Sioux City, IA</a></li>
                              <li><a href="inventory.php?invtype=9">Sioux Falls, SD</a></li>
                              <li><a href="inventory.php?invtype=28">Williston, ND</a></li>

                                
                
     <!-- end dynamic list -->
        			</ul>
      </li>
      
      
      
  <li><a href="contact.php">Contact Form</a></li>
  <li><a href="faq.php">Iseman FAQ</a></li>
  <li><a href="LocationsMap.php">Locations</a></li>
  <li><a href="Builders.php">Iseman's quality builders</a></li>

    <!--   <li><a href="map.php">Map (w/Phone Numbers)</a></li> -->
	 <!-- <li><a href="financing.php">Financing Information</a></li>-->


 <li><a href="#" onclick="MM_openBrWindow('mortCalc.php','calc','width=480,height=350')" ><img src="img211/calculator.gif" alt="Calculator" width="14" height="14" border="0" align="absmiddle" />&nbsp;Mortgage Calculator</a></li>
 
 
</ul>

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