Please, help me!!

Please, help me! I've got NO IDEA why this doesn't work (...or how to make it work..%-)!!

<script language="JavaScript">
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function MM_swapImgRestore() { //v2.0
  if (document.MM_swapImgData != null)
    for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
      document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}
//-->
</script>
    <td width="5" height="68">&nbsp;</td>
    <td width="804" height="68"> <a href="aboutmyself.htm" target="display_frame" onMouseOut="sdv_SwpRest()" onMouseOver="sdv_Swp('About myself','aboutmyself_ov.jpg','#950649021640')"><img name="About Myself" src="aboutmyself.jpg" width="177" height="53" border="0"></a></td>