如何让框架置中?
我想编一程序,代码如下,可不知道怎么让这个框架显示在中间位置,高手想想办法啊, 
  <frameset      framespacing= "0 "   border= "0 "   rows= "73,* "   frameborder= "0 ">  
 		 <frame      name= "banner "   scrolling= "no "   noresize   target= "contents "   src= "top.jsp ">  
 		 <frameset      cols= "200,* ">  
 			 <frame      name= "contents "   target= "main "   src= "left.jsp "   scrolling= "auto "   noresize>  
 			 <frame      name= "main "   src= "main.jsp ">  
 		 </frameset>  
 		 <noframes>  
 			 <body>  
 				 <p>  
 				zhengwen 
 				 </p>  
 			 </body>  
 		 </noframes>  
 	 </frameset>
------解决方案-------------------- <frameset  framespacing= "0 " border= "0 " rows= "73,* " frameborder= "0 ">  
  <frame  name= "banner " scrolling= "no " noresize target= "contents " src= "top.jsp ">  
  <frameset  cols= "200,* ">  
  <frame  name= "contents " target= "main " src= "left.jsp " scrolling= "auto " noresize>  
  <frame  name= "main " src= "main.jsp ">  
  </frameset>  
  <noframes>  
  <body>  
  <p>  
 zhengwen 
  </p>  
  </body>  
  </noframes>  
  </frameset>