How to detect page zoom level in IE 8?

Sadly I didn't a good enough solution on this generic question.

The most upvoted & accepted answer does't seem to work for me on IE 8.0.7601.17514 (latest). Another answer came close to working - but it is always off for me by 20%, probably because I have large fonts defined in Windows. I'm imagine I can't detect this in javascript, so this is not a solid answer as well (even though it might actually work for 95% of IE users ... I might use it as a workaround).

I开发者_Python百科s there a better, solid way to detect what the current page zoom is in IE 8?

I believe you can access it via the screen object:

screen.deviceXDPI / screen.logicalXDPI 

and zoom relative to default:

screen.systemXDPI / screen.logicalXDPI

untested :)