JS1k, the yearly JS code golfing competition

JS1k: The JavaScript code golfing competition

2010 - The Original

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Backround color flasher, to change the background color move or click the mouse or use the scrollwheel.

Author:
tantetoni2
Twitter:
@
GitHub:
Facebook:
Google+:
+
Reddit:
/r/
Pouet:
Website: 
sol.tb-world.de
Compo:
classic
Demo link:
https://js1k.com/2010-first/demo/382
Shortlink:
https://js1k.com/382
Blog post:
please update here!
Bytes:
805
Chars:
805
Submission
var D=document,B=D.body,DE=D.documentElement,E=D.createElement('div'),S=E.style,s=self,x,y,i,z,c,a=[],m=(/Firefox/i.test(navigator.userAgent))?"DOMMouseScroll":"mousewheel";function r(l,h){return Math.floor(Math.random()*(h-l+1))+l;};function g(){c=H();S.left=(c[0]<0?0:c[0])+'px';S.top=(c[1]<0?0:c[1])+'px';B.bgColor=E.innerHTML=C();};function H(){if(s.innerHeight){x=s.innerWidth;y=s.innerHeight;}else if(DE&&DE.clientHeight){x=DE.clientWidth;y=DE.clientHeight;}else if(B){x=B.clientWidth;y=B.clientHeight;}return [r(0,x)-E.offsetWidth,r(0,y)-E.offsetHeight];};function C(){a=[];for(i=0;i<3;i++){z=r(0,255).toString(16);if(z.length==1){z='0'+z;}a[a.length]=z;}return "#"+a.join('');};function I(){D['on'+m]=D.onmousemove=D.onclick=g;g();};S.cssText='font-size:10em;position:fixed;';B.appendChild(E);I();
Description
Backround color flasher, to change the background color move or click the mouse or use the scrollwheel. The script generate a random hex color.
Base64 encoded
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
Original source
var D  = document,
        B  = D.body,
        DE = D.documentElement,
        E  = D.createElement('div'),
        S  = E.style,
        s  = self,
        a  = [],
        m  = (/Firefox/i.test(navigator.userAgent))? "DOMMouseScroll" : "mousewheel",
        x,y,i,z,c;
    function r(l, h){
        return Math.floor(Math.random()*(h-l+1))+l;
    };
    function g(){
        c = H();
        S.left =(c[0]<0?0:c[0])+'px';
        S.top  =(c[1]<0?0:c[1])+'px';
        B.bgColor=E.innerHTML=C();
    };
    function H(){
        if (s.innerHeight) {
            x = s.innerWidth;
            y = s.innerHeight;
        }
        else if (DE && DE.clientHeight) {
            x = DE.clientWidth;
            y = DE.clientHeight;
        }
        else if (B) {
            x = B.clientWidth;
            y = B.clientHeight;
        }
        return [r(0, x)-E.offsetWidth, r(0, y)-E.offsetHeight];
    };
    function C() {
        a=[];
        for(i = 0; i < 3; i++)
        {
            z = r(0, 255).toString(16);
            if (z.length == 1) {
                z = '0' + z;
            }
            a[a.length] = z;
        }
        return "#" + a.join('');
    };
    function I() {
        D['on'+m] = D.onmousemove = D.onclick = g;
        g();
    };
    S.cssText = 'font-size:10em;position:fixed;';
    B.appendChild(E);
    I();