JavaScript detect CSS

Is there a way for JavaScript to detect whether or not CSS is active? In some browsers, you can turn CSS off. Can JS check it?

Hello--

There might be a much easier way but you could just run a brute force type test such as:

Code:

---

function cssWorks(){
    var div, width, flag = true;
    div = document.createElement('div');
    document.body.appendChild('div');
    div.style.width = "20px";  //set it
    if (div.offsetWidth != 20){  //see if it worked
        flag = false;
    }
    div.style.width = "40px";  //repeat on the off chance it was 20px anyway
    if (div.offsetWidth != 40){
        flag = false;
    }
    document.body.removeChild(div);  //remove
    return flag;
}

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It appears that JavaScript can set any characterists that it wants, but that does not guarantee that CSS is listening. Hmmm.