a 
href="http://www.jpl.nasa.gov/solar_system" 
onmouseout="MM_swapImgRestore()" 
onmouseover="MM_swapImage('solar_system','','http://podaac.jpl.nasa.gov/images/topnav_03cr.jpg',1)"><img 
src="http://podaac.jpl.nasa.gov/images/topnavoff_03cr.jpg" input 
title="Solar System" name="solar_system" border="0" height="20" 
width="146"></a></td>
                       <td><a 
href="http://www.jpl.nasa.gov/stars_galaxies/" 
onmouseout="MM_swapImgRestore()" 
onmouseover="MM_swapImage('stars','','http://podaac.jpl.na