固定漂浮在左边的效果

<!--漂浮窗口--> 
<STYLE type=text/css>#springfloat { 
  _display: none 
} 
</STYLE> 
<DIV style="POSITION: fixed; WIDTH: 150px; HEIGHT: 478px; MARGIN-LEFT: 20px; TOP: 10%;" 
id=springfloat><a href="#"><img border=0 alt="" src="leyu510.png" width=141 height=478 /></a></DIV> 
<!--漂浮窗口-->