如何让下面的居中到中间显示
爱醉酒的猫 2011-08-10 09:36:00 <frameset rows= 285,* cols= * frameborder= "'0" border= 0 framespacing= 0 >
<frame src= top.aspx name= topFrame scrolling= NO noresize >
<frameset cols= 200,600 frameborder= NO border= 0 framespacing= 0 >
<frame src= left.aspx name= leftFrame scrolling= NO noresize>
<frame src= Untitled-1.htm name= mainFrame > </frameset>