Columns and banners not aligning correctly

[Kiwi_legion]

Hi all I am having a bit of a strange issue where on first hit (after opening browser) my site is not correctly aligning the columns and banners its throwing them all over the page.

 

However if you hit refresh on the browser it works fine.

 

to see example view the test site at laptopshop.no-ip.biz

 

any ideas or help on how i might fix this would be appreciated.