Better idea: design your layout so that it's robust enough to handle changes like this. You can't disable them, even if you fix the font size (which you should never do in the first place), so you might as well respond to zooming gracefully.
The fact is, if all elements are scaled equally by the browser, your page should look and work exactly the same way as it did before (except, y'know, bigger) unless you took some lazy shortcuts in your design somewhere.
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
