Chart width and position

[kiwis]

I'm trying to include a page via AJAX onto my main index.php page. 

My index.php page, has a DIV which takes up only part of the viewable space, and I'm using JS ajax to call a second php page. On this second PHP page, I have my google timeline.

When this display, which it does. It's not 80% width like when I call the second page directly. Why? It's almost ignoring my other page content and being 80% of the body or screen.