A: 

You can prevent scrolling in your UIWebView by including this javascript:

document.addEventListener("touchmove", touchMove, false);

function touchMove(event) {
    event.preventDefault();
}

With scrolling disabled, your javascript should receive normal mousemove events.

cduhn
Ok, and what should be equal to element? Should this be inserted in loadHTMLstring method of UIWebView?Thanks!
Markus S.
Whoops. Copy-paste error. You can addEventListener on the document object. I edited my answer.
cduhn