我的Web窗体左边是用treeview控件做成的一个目录结构,右边是窗体内容,我想做成CSDN窗体所示的那样,可左右移动中间分界线来改变左右边大小

用框架呀
<FRAMESET name="fstMain" cols="136,83%" border="10" frameborder="1" FRAMESPACING="10" TOPMARGIN="0"
LEFTMARGIN="0" MARGINHEIGHT="0" MARGINWIDTH="0">
<FRAME name="fraLeftFrame" src="/expert/Deeptree/leftframe.asp?url=/expert/deeptree/welcome.asp?1=1&amp;frame=&amp;xmlsrc=/Expert/deeptree/Rooms/List.xml&amp;csdnstyle=0&amp;myie=ie"
TOPMARGIN="0" LEFTMARGIN="0" MARGINHEIGHT="0" MARGINWIDTH="0" FRAMEBORDER="1" BORDER="1">
<FRAME name="fraRightFrame" src="/Expert/deeptree/rightframe.asp?url=/expert/deeptree/welcome.asp?1=1&amp;typenum=1&amp;xmlsrc=/Expert/deeptree/Rooms/List.xml&amp;csdnstyle=0&amp;hidetoc=true&amp;whichpage=&amp;myie=ie"
FRAMEBORDER="no" bordercolor="#003366">
</FRAMESET>