(function (w)
	{
		w.subscribe = new (function ()
		{
			var widgets = {'paonews':'https://subscribe.anketolog.ru/widget/paonews','iom':'https://subscribe.anketolog.ru/widget/iom','footer':'https://subscribe.anketolog.ru/widget/footer'};

			this.widget = function (containerId, widget)
			{
				if (!widgets[widget])
				{
					return;
				}

				var f = document.createElement('iframe');
				f.frameBorder = 0;
				f.scrolling = 'no';
				f.width = '100%';
				f.height = '0';
				f.src = widgets[widget];
				f.onload = function ()
				{
					if (parseInt(this.style.height) > 0)
					{
						return;
					}

					document.getElementById(containerId).style.display = 'none';
				};

				document.getElementById(containerId).appendChild(f);

				var parse = function(d)
				{
					if (typeof d !== 'string') {
						return {
							method: null,
							key: null,
							action: null,
							value: null
						};
					}

					var c = d.split("::");
					if (c.length !== 4) {
						return {
							method: null,
							key: null,
							action: null,
							value: null
						};
					}

					return {
						method: c[0],
						key: c[1],
						action: c[2],
						value: c[3]
					};
				};
				var onmsg = function (e)
				{
					var message = parse(e.data);

					if (message.method === 'subscribe' && message.key === 'resize' && message.action === widgets[widget])
					{
						f.style.height = message.value + 'px';

						document.getElementById(containerId).style.display = 'block';
					}
				};

				if (w.addEventListener)
				{
					w.addEventListener('message', onmsg, false);
				}
				else if (w.attachEvent)
				{
					w.attachEvent('onmessage', onmsg);
				}
				else if (d.attachEvent)
				{
					d.attachEvent('onmessage', onmsg);
				}
				else
				{
					w.onmessage = onmsg;
				}
			};
		});
	})(window);