tr鼠标在与不在的效果.

<tr class='' onMouseOver='TrBgOn(this);' onMouseOut='TrBgOff(this);' >

 <script type="text/javascript">
 function TrBgOn(TrBgid){ 
  TrBgid.style.backgroundColor="#f3f3f5";
  TrBgid.style.cursor="hand";
 }
 function TrBgOff(TrBgid){ 
  TrBgid.style.backgroundColor="#ffffff";
 }
 </script>