Frame Rendering In Asp

Iam doing an asp project using frames.

I splitted the frames to top frame, content frame,left frame and bottom frame.

Each Time when i click menu, content frame and left frame is taking much time to render.
In the status bar iam able to see "opening pages...."

But when i open the leftframe or content frame seperately, it is coming fast.
Plus from the next click everything is working fine and fastly.

What shall i do to make it to render fastly.

a.) dont use frames use includes

or

b.) specify the frame it's supposed to open in

i use both depending upon what i am doing

if top & bottom are header & footer just use the following line on all your pages and then wory about the other two frames

<!--#include file="file.ext"--> that will include that file in that page. included files can be in subfolders but be carful with links