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  onmouseout="document.images.img0.src='res/hello.gif';"
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  onclick="document.images.img0.src='res/hello_click.gif'; return false;"
><img src="res/hello.gif" width="250" height="100" alt="" border="0" name="img0"></a>
<a href="javascript:void(0);"
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               document.images.img1.src='res/hello_over.gif';"
  onmouseout="document.images.img0.src='res/hello.gif';
              document.images.img1.src='res/hello.gif';"
  onmousedown="document.images.img0.src='res/hello_down.gif';
               document.images.img1.src='res/hello_down.gif';"
  onclick="document.images.img0.src='res/hello_click.gif';
           document.images.img1.src='res/hello_click.gif'; return false;"
><img src="res/hello.gif" width="250" height="100" alt="" border="0" name="img1"></a>