redirect with jsp

I have inluded (action) top.jsp and left.jsp files in my main.jsp. top and left are also built dynamically. top and left have images. so when i reduce the number of images in top and left then the redirect in main seems to work. otherwise redirect doesnt show any page when executed.
i dont know what is the problem. if some one know then give me a detailed reply.

It may be that top and left are filling up the output buffer, which is being flushed before you redirect in your main is reached. Are you getting any errors in you web server (illegel state or socket write exception)? Try setting the buffersize larger response.setBufferSize() to something like 32000. Have you looked at the page source for the blank page you do receive> does it offer any clues? A little more detailed info on your part would help in solving this : error mesg, etc.

best of luck
paul