Selenium Wrapper没有得到正确的html源页面

I'm doing a script to automate some actions. I'm opening a page with Selenium Wrapper (chrome) then wait 5 seconds (the page has some javascript/ajax, that changes the page), then I ask for the source code. I get the initial html not with the js and ajax changes (If I manually go to the navigator and right click -> source code I get the correct source code, though).I'm doing a script to automate some actions. I'