How do I make my website not to be zoomed by the browsers?

[tourpath]

Hi, everyone
I need to make my website not to be zoomed by browsers; in other words, if I use ie7 (firefox, opera ...so on..), and I try to zoom my website to see bigger letters or graphics, on my website... is there a way to disable this via javascript?
I do not want to disable this on the browsers themselves, but on my website instead.
please help me on this
thanks

[alvo]

I guess you don't want vision impaired people visiting your site? You don't say what kind of site you have, but unless it's a personal site that doesn't really matter, making a website purposely unaccessible to some users is a bad decision.