I am desinging a website as shown in below image, right now it's just a basic structure. This site is totally static, basically I've 6 main pages in website. navigation section, slider and footer will be same in all the pages. From the 6 pages one page will be for listing items (~15 sub pages for item). all the details will be loaded in CONTENT section.
Now my problem is that how can I achieve some thing like where navigation, slider and footer will be loaded once and content will be changed according to page.
I've thought of loading the content using AJAX, so it'll become one page website. But than problem would be with SEO.
So how can I achieve this both in one shot? Where navigation, slider and footer will be loaded once and SEO will also be fine.
Any help would be appriciated.