User:Wookipan/common.js

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  var classes = ['/w/images/3/33/Login_Scout.png',
            '/w/images/3/33/Login_Scout.png',
            '/w/images/7/71/Login_Pyro.png',
            '/w/images/3/35/Login_Heavy.png',
            '/w/images/a/ab/Login_Engineer.png',
            '/w/images/3/35/Login_Heavy.png',
            '/w/images/d/d4/Login_Medic.png',
            '/w/images/e/e4/Login_Sniper.png',
            '/w/images/2/27/Login_Spy.png'],

            // pick a random class image out of nine choices
            pickClass = classes[Math.floor(Math.random() * 9)];

        // ensure all relative elements are hit
        var nodes = $('#pt-userpage, #pt-anonuserpage, #pt-login');
        for (var i = 0; i < nodes.length; i++) {
            nodes[i].style.backgroundImage = 'url(' + pickClass + ')';
        }