<style>
.someClass {
  background-image:url();
}
.someClassHover {
  background-image:url('someImage.gif');
  background-repeat:repeat-x'
}
</style>
<table>
<tr>
<td onMouseOver="this.className='someClassHover'" onMouseOut="this.className='someClass'">Меню1</td>
<tr>
</table>