So, i've an iframe, this isn't scrollable (to really make it possible, to exhibit it better on IE). Can you really allow it to be scrollable, to scroll this content, but with no scrollbar (mousewheel?)?

This is actually the Code which i use:

<iframe src="home.html" id="iFrame" style="height: 445px; width: 575px; font: 16px/26px Tahoma, Georgia, Garamond, Serif; border: none; overflow: hidden;" scrolling="no" frameborder="0">
<p>Ihr Browser kann leider keine eingebetteten iFrames anzeigen</p>
</iframe>

Hiding the scrollbar, i.e. overflow: hidden, will remove a chance to scroll. So far as I am aware, there's no method of doing what you're attempting to accomplish.