[independence777]

3dmax, у меня чуть другой код ((
помоги, чо тут сносить?

Исходник

// ==UserScript==
// @name        VK musdic downloader
// @version     1.10
// @date        2010-07-06
// @author      [email protected]><e
//
// @include     http://vkontakte.ru/*
// @include     http://vk.com/*

// @include     http://*.vkontakte.ru/*
// @include     http://*.vk.com/*

// ==/UserScript==

(function(){
	var tools = {
			serialize : function(obj){
				var i, length, arr = [];
				if(obj instanceof HTMLElement)
					obj = tools.serializeToObject(obj);
				for(i in obj)
					arr.push(i + '=' + encodeURIComponent(obj[i]));
				return arr.join('&');
			},
			
			deserialize : function(str){
				var obj = {}, i = 0, k, length;
				str = str.split('&');
				for(length = str.length; i < length; ++i){
					k = str[i].split('=');
					obj[k[0]] = decodeURIComponent(k[1]);
				}
				return obj;
			},
			
			ajax : function(method, url, data, callback){
				var request = XMLHttpRequest();
				data = data || '';
				if(typeof data != 'string')
					data = tools.serialize(data);
				request.open(method.toUpperCase(), url || location.href, true);
				request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
				request.onreadystatechange = function(){
					if (request.readyState != 4) return;
					if (request.status == 200) {
						if(typeof callback == 'function')
							callback(request.responseText, request);
					} else {
						throw new Error('Error while processing XMLHttpRequest #' + request.status);
					}
				};
				request.send(data);
			},
			
			foreach: function(nodes, callback){
				for(var i = 0; i < nodes.length; ++i){
					callback.call(nodes[i]);
				}
			},
			
			formatSize : function(length){
				var i = 0, type = ['б','Кб','Мб','Гб','Тб','Пб'];
				while(parseInt(length / 1000) && i < type.length) {
					length /= 1024;
					i++
				}
				return length.toFixed(2) + ' ' + type[i];
			},
			
			createElement: function(tag, opts){
				var element = document.createElement(tag), key;
				opts = opts || {};
				return tools.extend(element, opts);
			},
			
			extend: function(origObj, newObj){
				for(var key in newObj){
					if(typeof newObj[key] == 'object'){
						origObj[key] = {};
						tools.extend(origObj[key], newObj[key]);
					} else origObj[key] = newObj[key]
				}
				return origObj;
			}
		},
		imgBS64 = 'data:image/gif;base64,R0lGODlhEAAQAJEAAJqxxv///199nQAAACH5BAAAAAAALAAAAAAQABAAAAIjDISpCLafDpwv2EDTxVns7l3Z9k0kR5WdBbbhybqKBDY01RQAOw%3D%3D';
	if(~location.hash.indexOf('dataTransfer')){
		window.addEventListener("message", function(event){
			var data = tools.deserialize(event.data);
			tools.ajax('head', data.file, '', function(text, obj){
				var length = obj.getResponseHeader('Content-Length');
				window.parent.postMessage(tools.serialize({'id':data.id, 'length': length}), '*');
			});
		},false);
		return;
	}
	window.addEventListener('DOMContentLoaded', function(){
		var style = tools.createElement('style', {'innerHTML' : '.__getBitrate {cursor:help}'});
		document.querySelector('head').appendChild(style);
		var audios = document.querySelectorAll('div.audioRow'),
			iframe = tools.createElement('iframe', {
				'style' : {
					'position' : 'absolute',
					'top' : '-999px',
					'left' : '-999px',
					'height' : '1px',
					'width' : '1px'
				},
				'id' : '_dataTransferFrame'
			});
		document.body.appendChild(iframe);
		function processAudio(){
			var img = this.querySelector('img.playimg'),
				file = img.getAttribute('onclick').match(/operate\(\d+,\s*'([^']+)',\s*\d+\)/i),
				self = this;
			if(!file){
				file = img.getAttribute('onclick').match(/operate\(\d+,(\d+),(\d+),'([^']+)',\d+\)/i);
				if(!file) throw new Error('Cannot get file url for #' + this.id);
				file = 'http://cs' + file[1] + '.' + location.host + '/u' + file[2] + '/audio/' + file[3] + '.mp3';
			} else file = file[1];
			var download = tools.createElement('a', {'href':file}),
				downloadImg = tools.createElement('img', {'src':imgBS64});
			download.appendChild(downloadImg);
			img.parentNode.appendChild(download);
			img.parentNode.style.width = '50px';
			var subdomain = file.match(/^(http:\/\/\w+\.(?:vkontakte\.ru|vk\.com))/);
			if(!subdomain) throw new Error('Cannot get subdomain for #' + this.id);
			subdomain = subdomain[1];
			
			var btn = this.querySelector('div.duration');
			if(!btn) throw new Error('Cannot get duration label');
			btn.className += ' __getBitrate';
			btn.title = 'Нажмите, чтобы получить битрейт';
			btn.onclick = function(){
				var elem = {
						'id' : self.id,
						'file' : file
					},
					url = subdomain + '/#dataTransfer';
				if(iframe.src != url){
					iframe.src = url;
					iframe.onload = function(){
						iframe.contentWindow.postMessage(tools.serialize(elem), '*');
					};
				} else iframe.contentWindow.postMessage(tools.serialize(elem), '*');

				this.onclick = null;
				this.className = this.className.replace('__getBitrate', '');
				this.title = '';
			};
		}
		tools.foreach(audios, processAudio);	
		
		setInterval(function(){
			if(!audios[0].parentNode){
				audios = document.querySelectorAll('div.audioRow');
				tools.foreach(audios, processAudio);
			}
		}, 200);
		
		window.addEventListener("message", function(event){
			var data = tools.deserialize(event.data),
				div = document.querySelector('#' + data.id + ' div.duration'),
				duration = div.innerHTML.split(':');
			duration = duration[0] * 60 + +duration[1];
			div.innerHTML += ' | ' + ((data.length / duration / 125) | 0) + ' Кбит/с | ' + tools.formatSize(data.length);
		},false);
	}, true);
})();