AjaxFileUpload is not showing in the all of my browser.

I try to use the AjaxFileUpload in my project. But it doesn't show as what it should.

Attach with the print screen when it is rendered on the browser.

https://www.dropbox.com/s/etww9ypyjcaarsw/Untitled.png

But when I use design mode in VS2012, it able to show accordingly.

P/S: the ajaxtoolkit.dll I'm using now is file version 4.5.7.725

I downloaded some other sample of AjaxFileUpload ( file version 4.1.60919.0), and use their dll, it works.