gistfile1.js

// here's a rewrite of the amelie.js to avoid global variables and eval via setTimeout(string..
// http://icant.co.uk/ie6-amelie/

if (document.all && !window.XMLHttpRequest){(function(){
    var x = 1,
        when = 0,
        str, dir, fil;

    function amelie() {
            if (x == 2) {
                x = 0;
            }
            if (x == 0) {
                str = 0;
                dir = 0;
                when = Math.floor(Math.random() * 10*1000) + 2000;
                setTimeout(amelie, when);
            } else {
                str = Math.floor(Math.random() * 2) + 2;
                dir = Math.floor(Math.random() * 360);
                setTimeout(amelie, 500);
            }
            var fil = "progid:DXImageTransform.Microsoft.MotionBlur(strength=" + str + ",direction=" + dir + ",enabled='true')";
            document.body.style.filter = fil;
            x++;
        }
    setTimeout(amelie, 1000);
    
})()}

Why if (x == 0) {} and not if (!x)?
Why str = 0; dir = 0; instead of just str = dir = 0;?
Why x * 10 * 1000 and not x * 1e4?

THINK OF THE IE6 PERFORMANCE MAN

@math, var str = dir = 0 globalizes dir

@phiggins42: Even when it's called from inside an anonymous function? Also note that in this case it’s not exactly var str = dir = 0; but str = dir = 0 — the variables str and dir have already been declared.

@math - you are totally right. I thought the gist has changed since your initial comment and the 0's were in the var declaration for str && dir ... /me stands corrected.