Googled around and found a jQuery script for auto centering a div, horizontally and vertically.
Added exact the same as the example gives but by one reason the div is not centered by page load, only on window resize.
Example link code: http://demo.tutorialzine.com/2010/03/centering-div-vertically-and-horizontally/demo.html
Example demo: http://demo.tutorialzine.com/2010/03/centering-div-vertically-and-horizontally/3.html
The link I made is online (test): http://i333180.iris.fhict.nl/test/index.html
And as you can notice by source-center.js, it is just the same as the examples code is given but it only centers when window is resized.. Thanks