JS1k: The JavaScript code golfing competition

function d(c,b){var a=document.createElement("div");s0(a,"position:absolute;left:"+r(800)+"px;top:"+r(400)+"px;");s(a,"font-size:"+c+"px; opacity: 1.0;");s(a,"color:rgb("+r(255)+","+r(255)+","+r(255)+");");document.body.appendChild(a);a.innerHTML=u();var b=setInterval(function(){m(a)},b)}function s0(b,a){b.style.cssText=a}function s(b,a){b.style.cssText+=a}function m(a){o=parseFloat(a.style.opacity)-0.01;a.style.opacity=o;if(o<0.1){s0(a,"position:absolute;left:"+r(800)+"px;top:"+r(400)+"px;");s(a,"color:rgb("+r(255)+","+r(255)+","+r(255)+");");s(a,"font-size:"+(14+r(72))+"px; opacity:1.0;");a.innerHTML=u()}}function u(){num=Math.round(1114111*Math.random());var uni=eval('"\\u'+num.toString(16)+'"');return(uni.length>1)?u():uni}function r(a){return Math.round(a*Math.random())}var canvas=document.getElementById("c");var context=canvas.getContext("2d");document.body.style.cssText="background-color:black;color:white;";function l(a){if(a>0){try{d(14+r(72),10)}catch(b){}setTimeout(function(){l(a-1)},100)}}l(50);

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

function d(size, interval) {
    var txt = document.createElement('div');

    s0(txt, 'position:absolute;left:' + r(800) + 'px;top:' + r(400) + 'px;');
    s(txt, 'font-size:'+size+'px; opacity: 1.0;');
    s(txt, 'color:rgb(' + r(255) + ',' + r(255) + ',' + r(255) + ');');

    document.body.appendChild(txt);
    txt.innerHTML = u();

    var interval = setInterval(function() {
        m(txt);
    }, interval);
}

function s0(e, s) {
    e.style.cssText = s;
}

function s(e, s) {
    e.style.cssText += s;
}

function m(l) {
    o = parseFloat(l.style.opacity) - 0.01;
    l.style.opacity = o;
    if(o < 0.1) {
        s0(l, 'position:absolute;left:' + r(800) + 'px;top:' + r(400) + 'px;');
        s(l, 'color:rgb(' + r(255) + ',' + r(255) + ',' + r(255) + ');');
        s(l, 'font-size:'+(14+r(72))+'px; opacity:1.0;');
        l.innerHTML = u();
    }
}

function u() {
    num = Math.round(0x10FFFF * Math.random());
    var uni = eval('"\\u' + num.toString(16) + '"');
    return (uni.length>1)? u() : uni;
}

function r(h) {
    return Math.round(h * Math.random());
}

var canvas = document.getElementById("c");
var context = canvas.getContext('2d');

document.body.style.cssText="background-color:black;color:white;";

function l(num) {
    if(num > 0) {
        try { 
            d(14+r(72), 10);
        } catch(e) { }
        setTimeout(function() { l(num - 1) }, 100);
    }
}
l(50);