How do I retain my website's top and left panels whilst returning pages to the main area (can't use

I have to create an intranet for work. I need to be able to retain the top and left navigation menus (dhtml with javascript if this helps) whilst returning search results or other links to the main area. I have tried using the old Frames method but I need to be able to scroll down the page as the left hand menu goes down further than the majority of our users screen resolutions can handle. If I turn on scrolling for the left hand frame it looks very bad.<br />
If it wasn't for the need to return search results to the page and keep the look and feel of the page the same I would use templates.<br />
Our current intranet uses pretty much all asp and is able to do it but it looks really complicated. Lastly we are a not-for-profit organisation so it can't cost anything or close to it.<br />
Has anyone got any suggestions?<br />
 
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