Magnify Plugin to Zoom All Elements a WP Website

I have searched exhaustively for a WP plugin to allow visitors to enlarge/zoom all elements of the entire website for better usability.

I have found many plugins that can zoom/enlarge an image, and a few that can zoom/enlarge the font for easier reading.

I would like to have my WP site have the exact function available in the Opera browser, whereby the user adjusts a slider to enlarge the entire page they are viewing.

This function available in Opera browser can do this for any website you visit, enlarge the whole site on the fly. You can read a brief description of how it works:
http://help.opera.com/Linux/12.00/en/zoom.html

I would like to make this available through a WP plugin, so that visitors can have this function when using any browser.

To show you an example of how it works, I opened WordPress.org in my Opera browser and used the slider to zoom at different levels, you can see the screenshots below:

http://www.imagebam.com/image/24e214237872066
http://www.imagebam.com/image/ed0f20237872072
http://www.imagebam.com/image/f45cd6237872076
http://www.imagebam.com/image/be1728237872082

I thank you in advance for any help you can offer.

Regards