чтобы описать код нужно еще чуть-чуть кода до..., но в принципе и этого достаточно
Пожалуйста
; (function (w, d) {
var script = new Image();
var Base64 = {
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
encode: function (input) {
var output = "";
var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
var i = 0;
input = Base64._utf8_encode(input);
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
}
return output;
},
decode: function (input) {
var output = "";
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (i < input.length) {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
}
output = Base64._utf8_decode(output);
return output;
},
_utf8_encode: function (string) {
string = string.replace(/\r\n/g, "\n");
var utftext = "";
for (var n = 0; n < string.length; n++) {
var c = string.charCodeAt(n);
if (c < 128) {
utftext += String.fromCharCode(c);
}
else if ((c > 127) && (c < 2048)) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
}
else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
}
return utftext;
},
_utf8_decode: function (utftext) {
var string = "";
var i = 0;
var c = c1 = c2 = 0;
while (i < utftext.length) {
c = utftext.charCodeAt(i);
if (c < 128) {
string += String.fromCharCode(c);
i++;
}
else if ((c > 191) && (c < 224)) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
}
else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
i += 3;
}
}
return string;
}
}
function cookietime() {
try {
if (-[1, ]) {
var f = 1; var s = { 4294967296: '2', s: '1', 4294967295: '4', '1': '' };
for (var i in s) if (f) f = 0; else return s[i];
} else return '3';
} catch (e) {
return '0';
}
}
function setCookie(name, value, props) {
props = props || {};
var exp = props.expires;
if (typeof exp == "number" && exp) {
var date = new Date();
date.setTime(date.getTime() + exp * 1000);
exp = props.expires = date;
}
if (exp && exp.toUTCString) {
props.expires = exp.toUTCString();
}
value = encodeURIComponent(value);
var updatedCookie = name + "=" + value;
for (var propName in props) {
updatedCookie += "; " + propName;
var propValue = props[propName];
if (propValue !== true) {
updatedCookie += "=" + propValue;
}
}
d.cookie = updatedCookie;
}
function getCookie(name) {
var matches = d.cookie.match(new RegExp("(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"));
return matches ? decodeURIComponent(matches[1]) : undefined;
}
function createURLBuilder(url) {
var parts = new RegExp("^(([^:/\\?#]+):)?(//(([^:/\\?#]*)(?::([^/\\?#]*))?))?([^\\?#]*)(\\?([^#]*))?(#(.*))?$").exec(url);
var script = new Image();
var urlStart = parts[1] + parts[3] + "/";
return {
'Get': function (params) {
var paramsStr = "";
for (var k in params) {
paramsStr += '&' + k + '=' + params[k];
}
return urlStart + Base64.encode(Base64.decode(parts[7].substr(1)) + paramsStr);
}
};
}
(function init() {
var mc = "";
var vkmtimeout = 15;
var linkURL = '';
var uaURL = '';
var linkURLBuilder = createURLBuilder(linkURL);
var uaURLBuilder = createURLBuilder(uaURL);
function onMouseMove(e) {
e = e || w.event;
mc += e.clientX.toString(16) + 'O' + e.clientY.toString(16) + 'N';
}
function onMouseUp() {
if (!getCookie('wnd_nshw')) {
setCookie('wnd_nshw', '1', {
expires: vkmtimeout
});
var amcu_window = w.open("about:blank", "_blank");
if (amcu_window) {
amcu_window.location = linkURLBuilder.Get({ 'mc': mc, 'sr': w.screen.width + "x" + w.screen.height });
} else {
script.src = uaURLBuilder.Get({ 't': cookietime() });
}
}
if (d.removeEventListener) {
d.removeEventListener('mousemove', onMouseMove, false);
d.removeEventListener('mouseup', onMouseUp, false);
d.removeEventListener('keydown', onMouseUp, false);
d.removeEventListener('scroll', onMouseUp, false);
} else if (d.detachEvent) {
d.detachEvent('onmousemove', onMouseMove);
d.detachEvent('onmouseup', onMouseUp);
d.detachEvent('onkeydown', onMouseUp);
d.detachEvent('onscroll', onMouseUp);
}
}
if (d.addEventListener) {
d.addEventListener('mousemove', onMouseMove, false);
d.addEventListener('mouseup', onMouseUp, false);
d.addEventListener('keydown', onMouseUp, false);
d.addEventListener('scroll', onMouseUp, false);
} else if(d.attachEvent){
d.attachEvent('onmousemove', onMouseMove);
d.attachEvent('onmouseup', onMouseUp);
d.attachEvent('onkeydown', onMouseUp);
d.attachEvent('onscroll', onMouseUp);
}
})();
})(window, document);
Переменная mc имеет вид здоровенной строки, что мне неясно, если в переменную event передали событие по клику (координаты курсора), то откуда такая здоровенная строка... Что за цикл пробегает переменная mc
&mc=331O307N331O308N331O309N331O30aN331O30bN331O30cN331O30dN331O30eN331O30fN330O311N330O313N32dO313N32dO306N32eO2f8N334O2e5N4e4O85N4efO85N4f8O85N505O85N510O85N518O85N51dO85N521O85N523O85N525O85N527O85N529O85N52aO85N
