求救~!请问邮箱的页面属于哪种框架页面?有什么优缺点~!

我给你查了下资料：
163是多框架结构，比较复杂，具体是：
<frameset rows="0,0,*,0,0,0,0,0,0" framespacing="0" frameborder="NO" border="0" id="frms" onunload="unload()">
<frame src="" name="jsFrame" id="jsFrame" scrolling="NO">
<frame src="" name="topFrame" id="topFrame" scrolling="NO">
<frameset cols="0,*" frameborder="0" border="0" framespacing=0>
<frame src="" name="folderFrame" noresize marginheight="0" id="folderFrame" marginwidth="0">
<frame src="" name="indexFrame" id="indexFrame" >
</frameset>
<frame src="" name="contentFrame" id="contentFrame" scrolling="yes">
<frame src="" name="addressFrame" id=