HI All

I have a large number of web pages that are dynamic
but a section in the middle that is the same for everyone
of the pages, it is a large amount of mixed content, images,text ,css,form elements.

THese pages are being developed in php

my question is, if this content is the same and never changes,
can i put them in another html file and include in an Iframe
so that they are not processed aspart of the php ( not much of a benefit with cacheing etc) on the server but more importantly cached at the client end so not downloaded and hopefully saved network traffic?
will this work?
is there a better way of doing this?
will there be any benefit?
I am hoping that when they go from page to page, the clients browser will not need to re download the content for the iframe each time
THanks in advance