How can I change position of the mouse cursor on an element when page loading is over with jQuery?
This is not possible.
I also disagree with highjacking the user's mouse position, even if it were possible. If you did that to me as a user, I would immediately leave your site.
JavaScript was designed this way on purpose. Imagine the internet as it is today, with all the crappy sites and exploits out there, mix in the ability to control the user's mouse, and you have a much worse experience.
Let your users decide what they want to click on.