How to click this video?

[nitin2003]

Hi,

I am trying to click on this video's play button at the center.
http://www.keek.com/wawa_zainal/keeks/zQwAbab
http://www.keek.com/kiey505/keeks/eshHbab
and so on...

The mouse click emulation clicks at random places because of different user agents and browser resolutions.
I want to use various user agents, hence can't hard code it.

Search by picture is not an option because the Green play button gets over shadowed in many videos and hence might fail.

Please help.

Thanks