/**
 * JsHttpRequest: JavaScript "AJAX" data loader
 * Minimized version: see debug directory for the complete one.
 *
 * @license LGPL
 * @author Dmitry Koterov, http://en.dklab.ru/lib/JsHttpRequest/
 * @version 5.x $Id$
 */

function JsHttpRequest()
{
	var t = this;
	t.onreadystatechange = null;
	t.readyState = 0;
	t.responseText = null;
	t.responseXML = null;
	t.status = 200;
	t.statusText = "OK";
	t.responseJS = null;
	t.caching = false;
	t.loader = null;
	t.session_name = "PHPSESSID";
	t._ldObj = null;
	t._reqHeaders = [];
	t._openArgs = null;
	t._errors =
	{
		inv_form_el: "Invalid FORM element detected: name=%, tag=%",
		must_be_single_el: "If used, <form> must be a single HTML element in the list.",
		js_invalid: "JavaScript code generated by backend is invalid!\n%",
		url_too_long: "Cannot use so long query with GET request (URL is larger than % bytes)",
		unk_loader: "Unknown loader: %",
		no_loaders: "No loaders registered at all, please check JsHttpRequest.LOADERS array",
		no_loader_matched: "Cannot find a loader which may process the request. Notices are:\n%"
	};

	t.abort = function()
	{
		with (this)
		{
			if (_ldObj && _ldObj.abort)
			{
				_ldObj.abort();
			}

			_cleanup();

			if (readyState == 0)
			{
				return;
			}

			if (readyState == 1 && !_ldObj)
			{
				readyState = 0;
				return;
			}

			_changeReadyState(4, true);
		}
	};

	t.open = function(_2, _3, _4, _5, _6)
	{
		with (this)
		{
			if (_3.match(/^((\w+)\.)?(GET|POST)\s+(.*)/i))
			{
				this.loader = RegExp.$2 ? RegExp.$2 : null;
				_2 = RegExp.$3;
				_3 = RegExp.$4;
			}

			try
			{
				if (document.location.search.match(new RegExp("[&?]" + session_name + "=([^&?]*)")) || document.cookie.match(new RegExp("(?:;|^)\\s*" + session_name + "=([^;]*)")))
				{
					_3 += (_3.indexOf("?") >= 0 ? "&" : "?") + session_name + "=" + this.escape(RegExp.$1);
				}
			}
			catch (e)
			{
			}

			_openArgs =
			{
				method: (_2 || "").toUpperCase(),
				url: _3,
				asyncFlag: _4,
				username: _5 != null ? _5 : "",
				password: _6 != null ? _6 : ""
			};

			_ldObj = null;
			_changeReadyState(1, true);
			return true;
		}
	};

	t.send = function(_7)
	{
		if (!this.readyState)
		{
			return;
		}

		this._changeReadyState(1, true);
		this._ldObj = null;
		var _8 = [];
		var _9 = [];

		if (!this._hash2query(_7, null, _8, _9))
		{
			return;
		}

		var _a = null;

		if (this.caching && !_9.length)
		{
			_a = this._openArgs.username + ":" + this._openArgs.password + "@" + this._openArgs.url + "|" + _8 + "#" + this._openArgs.method;
			var _b = JsHttpRequest.CACHE[_a];

			if (_b)
			{
				this._dataReady(_b[0], _b[1]);
				return false;
			}
		}

		var _c = (this.loader || "").toLowerCase();

		if (_c && !JsHttpRequest.LOADERS[_c])
		{
			return this._error("unk_loader", _c);
		}

		var _d = [];
		var _e = JsHttpRequest.LOADERS;

		for (var _f in _e)
		{
			var ldr = _e[_f].loader;

			if (!ldr)
			{
				continue;
			}

			if (_c && _f != _c)
			{
				continue;
			}

			var _11 = new ldr(this);
			JsHttpRequest.extend(_11, this._openArgs);
			JsHttpRequest.extend(_11,
			{
				queryText: _8.join("&"),
				queryElem: _9,
				id: ( new Date().getTime()) + "" + JsHttpRequest.COUNT++,
				hash: _a,
				span: null
			});

			var _12 = _11.load();

			if (!_12)
			{
				this._ldObj = _11;
				JsHttpRequest.PENDING[_11.id] = this;
				return true;
			}

			if (!_c)
			{
				_d[_d.length] = "- " + _f.toUpperCase() + ": " + this._l(_12);
			}
			else
			{
				return this._error(_12);
			}
		}

		return _f ? this._error("no_loader_matched", _d.join("\n")) : this._error("no_loaders");
	};

	t.getAllResponseHeaders = function()
	{
		with (this)
		{
			return _ldObj && _ldObj.getAllResponseHeaders ? _ldObj.getAllResponseHeaders() : [];
		}
	};

	t.getResponseHeader = function(_13)
	{
		with (this)
		{
			return _ldObj && _ldObj.getResponseHeader ? _ldObj.getResponseHeader(_13) : null;
		}
	};

	t.setRequestHeader = function(_14, _15)
	{
		with (this)
		{
			_reqHeaders[_reqHeaders.length] =
			[
				_14,
				_15
			];
		}
	};

	t._dataReady = function(_16, js)
	{
		with (this)
		{
			if (caching && _ldObj)
			{
				JsHttpRequest.CACHE[_ldObj.hash] =
				[
					_16,
					js
				];
			}

			responseText = responseXML = _16;
			responseJS = js;

			if (js !== null)
			{
				status = 200;
				statusText = "OK";
			}
			else
			{
				status = 500;
				statusText = "Internal Server Error";
			}

			_changeReadyState(2);
			_changeReadyState(3);
			_changeReadyState(4);
			_cleanup();
		}
	};

	t._l = function(_18)
	{
		var i = 0, p = 0, msg = this._errors[_18[0]];

		while ((p = msg.indexOf("%", p)) >= 0)
		{
			var a = _18[++i] + "";
			msg = msg.substring(0, p) + a + msg.substring(p + 1, msg.length);
			p += 1 + a.length;
		}

		return msg;
	};

	t._error = function(msg)
	{
		msg = this._l( typeof (msg) == "string" ? arguments : msg);
		msg = "JsHttpRequest: " + msg;

		if (!window.Error)
		{
			throw msg;
		}
		else
		{
			if (( new Error(1, "test")).description == "test")
			{
				throw new Error(1, msg);
			}
			else
			{
				throw new Error(msg);
			}
		}
	};

	t._hash2query = function(_1e, _1f, _20, _21)
	{
		if (_1f == null)
		{
			_1f = "";
		}

		if (("" + typeof (_1e)).toLowerCase() == "object")
		{
			var _22 = false;

			if (_1e && _1e.parentNode && _1e.parentNode.appendChild && _1e.tagName && _1e.tagName.toUpperCase() == "FORM")
			{
				_1e =
				{
					form: _1e
				};
			}

			for (var k in _1e)
			{
				var v = _1e[k];

				if (v instanceof Function)
				{
					continue;
				}

				var _25 = _1f ? _1f + "[" + this.escape(k) + "]" : this.escape(k);
				var _26 = v && v.parentNode && v.parentNode.appendChild && v.tagName;

				if (_26)
				{
					var tn = v.tagName.toUpperCase();

					if (tn == "FORM")
					{
						_22 = true;
					}
					else
					{
						if (tn == "INPUT" || tn == "TEXTAREA" || tn == "SELECT")
						{
						}
						else
						{
							return this._error("inv_form_el", (v.name || ""), v.tagName);
						}
					}

					_21[_21.length] =
					{
						name: _25,
						e: v
					};
				}
				else
				{
					if (v instanceof Object)
					{
						this._hash2query(v, _25, _20, _21);
					}
					else
					{
						if (v === null)
						{
							continue;
						}

						if (v === true)
						{
							v = 1;
						}

						if (v === false)
						{
							v = "";
						}

						_20[_20.length] = _25 + "=" + this.escape("" + v);
					}
				}

				if (_22 && _21.length > 1)
				{
					return this._error("must_be_single_el");
				}
			}
		}
		else
		{
			_20[_20.length] = _1e;
		}

		return true;
	};

	t._cleanup = function()
	{
		var _28 = this._ldObj;

		if (!_28)
		{
			return;
		}

		JsHttpRequest.PENDING[_28.id] = false;
		var _29 = _28.span;

		if (!_29)
		{
			return;
		}

		_28.span = null;
		var _2a = function()
		{
			_29.parentNode.removeChild(_29);
		};

		JsHttpRequest.setTimeout(_2a, 50);
	};

	t._changeReadyState = function(s, _2c)
	{
		with (this)
		{
			if (_2c)
			{
				status = statusText = responseJS = null;
				responseText = "";
			}

			readyState = s;

			if (onreadystatechange)
			{
				onreadystatechange();
			}
		}
	};

	t.escape = function(s)
	{
		return escape(s).replace(new RegExp("\\+", "g"), "%2B");
	};
}

JsHttpRequest.COUNT = 0;
JsHttpRequest.MAX_URL_LEN = 2000;
JsHttpRequest.CACHE = {
};

JsHttpRequest.PENDING = {
};

JsHttpRequest.LOADERS = {
};

JsHttpRequest._dummy = function()
{
};

JsHttpRequest.TIMEOUTS =
{
	s: window.setTimeout,
	c: window.clearTimeout
};

JsHttpRequest.setTimeout = function(_2e, dt)
{
	window.JsHttpRequest_tmp = JsHttpRequest.TIMEOUTS.s;

	if (typeof (_2e) == "string")
	{
		id = window.JsHttpRequest_tmp(_2e, dt);
	}
	else
	{
		var id = null;
		var _31 = function()
		{
			_2e();
			delete JsHttpRequest.TIMEOUTS[id];
		};

		id = window.JsHttpRequest_tmp(_31, dt);
		JsHttpRequest.TIMEOUTS[id] = _31;
	}

	window.JsHttpRequest_tmp = null;
	return id;
};

JsHttpRequest.clearTimeout = function(id)
{
	window.JsHttpRequest_tmp = JsHttpRequest.TIMEOUTS.c;
	delete JsHttpRequest.TIMEOUTS[id];
	var r = window.JsHttpRequest_tmp(id);
	window.JsHttpRequest_tmp = null;
	return r;
};

JsHttpRequest.query = function(url, _35, _36, _37)
{
	var req = new this();
	req.caching = !_37;
	req.onreadystatechange = function()
	{
		if (req.readyState == 4)
		{
			_36(req.responseJS, req.responseText);
		}
	};

	req.open(null, url, true);
	req.send(_35);
};

JsHttpRequest.dataReady = function(d)
{
	var th = this.PENDING[d.id];
	delete this.PENDING[d.id];

	if (th)
	{
		th._dataReady(d.text, d.js);
	}
	else
	{
		if (th !== false)
		{
			throw "dataReady(): unknown pending id: " + d.id;
		}
	}
};

JsHttpRequest.extend = function(_3b, src)
{
	for (var k in src)
	{
		_3b[k] = src[k];
	}
};

JsHttpRequest.LOADERS.xml =
{
	loader: function(req)
	{
		JsHttpRequest.extend(req._errors,
		{
			xml_no: "Cannot use XMLHttpRequest or ActiveX loader: not supported",
			xml_no_diffdom: "Cannot use XMLHttpRequest to load data from different domain %",
			xml_no_headers: "Cannot use XMLHttpRequest loader or ActiveX loader, POST method: headers setting is not supported, needed to work with encodings correctly",
			xml_no_form_upl: "Cannot use XMLHttpRequest loader: direct form elements using and uploading are not implemented"
		});

		this.load = function()
		{
			if (this.queryElem.length)
			{
				return ["xml_no_form_upl"];
			}

			if (this.url.match(new RegExp("^([a-z]+://[^\\/]+)(.*)", "i")))
			{
				if (RegExp.$1.toLowerCase() != document.location.protocol + "//" + document.location.hostname.toLowerCase())
				{
					return
					[
						"xml_no_diffdom",
						RegExp.$1
					];
				}
			}

			var xr = null;

			if (window.XMLHttpRequest)
			{
				try
				{
					xr = new XMLHttpRequest();
				}
				catch (e)
				{
				}
			}
			else
			{
				if (window.ActiveXObject)
				{
					try
					{
						xr = new ActiveXObject("Microsoft.XMLHTTP");
					}
					catch (e)
					{
					}

					if (!xr)
					{
						try
						{
							xr = new ActiveXObject("Msxml2.XMLHTTP");
						}
						catch (e)
						{
						}
					}
				}
			}

			if (!xr)
			{
				return ["xml_no"];
			}

			var _40 = window.ActiveXObject || xr.setRequestHeader;

			if (!this.method)
			{
				this.method = _40 && this.queryText.length ? "POST" : "GET";
			}

			if (this.method == "GET")
			{
				if (this.queryText)
				{
					this.url += (this.url.indexOf("?") >= 0 ? "&" : "?") + this.queryText;
				}

				this.queryText = "";

				if (this.url.length > JsHttpRequest.MAX_URL_LEN)
				{
					return
					[
						"url_too_long",
						JsHttpRequest.MAX_URL_LEN
					];
				}
			}
			else
			{
				if (this.method == "POST" && !_40)
				{
					return ["xml_no_headers"];
				}
			}

			this.url += (this.url.indexOf("?") >= 0 ? "&" : "?") + "JsHttpRequest=" + (req.caching ? "0" : this.id) + "-xml";
			var id = this.id;
			xr.onreadystatechange = function()
			{
				if (xr.readyState != 4)
				{
					return;
				}

				xr.onreadystatechange = JsHttpRequest._dummy;
				req.status = null;

				try
				{
					req.status = xr.status;
					req.responseText = xr.responseText;
				}
				catch (e)
				{
				}

				if (!req.status)
				{
					return;
				}

				try
				{
					eval("JsHttpRequest._tmp = function(id) { var d = " + req.responseText + "; d.id = id; JsHttpRequest.dataReady(d); }");
				}
				catch (e)
				{
					return req._error("js_invalid", req.responseText);
				}

				JsHttpRequest._tmp(id);
				JsHttpRequest._tmp = null;
			};

			xr.open(this.method, this.url, true, this.username, this.password);

			if (_40)
			{
				for (var i = 0; i < req._reqHeaders.length; i++)
				{
					xr.setRequestHeader(req._reqHeaders[i][0], req._reqHeaders[i][1]);
				}

				xr.setRequestHeader("Content-Type", "application/octet-stream");
			}

			xr.send(this.queryText);
			this.span = null;
			this.xr = xr;
			return null;
		};

		this.getAllResponseHeaders = function()
		{
			return this.xr.getAllResponseHeaders();
		};

		this.getResponseHeader = function(_43)
		{
			return this.xr.getResponseHeader(_43);
		};

		this.abort = function()
		{
			this.xr.abort();
			this.xr = null;
		};
	}
};

JsHttpRequest.LOADERS.script =
{
	loader: function(req)
	{
		JsHttpRequest.extend(req._errors,
		{
			script_only_get: "Cannot use SCRIPT loader: it supports only GET method",
			script_no_form: "Cannot use SCRIPT loader: direct form elements using and uploading are not implemented"
		});

		this.load = function()
		{
			if (this.queryText)
			{
				this.url += (this.url.indexOf("?") >= 0 ? "&" : "?") + this.queryText;
			}

			this.url += (this.url.indexOf("?") >= 0 ? "&" : "?") + "JsHttpRequest=" + this.id + "-" + "script";
			this.queryText = "";

			if (!this.method)
			{
				this.method = "GET";
			}

			if (this.method !== "GET")
			{
				return ["script_only_get"];
			}

			if (this.queryElem.length)
			{
				return ["script_no_form"];
			}

			if (this.url.length > JsHttpRequest.MAX_URL_LEN)
			{
				return
				[
					"url_too_long",
					JsHttpRequest.MAX_URL_LEN
				];
			}

			var th = this, d = document, s = null, b = d.body;

			if (!window.opera)
			{
				this.span = s = d.createElement("SCRIPT");
				var _49 = function()
				{
					s.language = "JavaScript";

					if (s.setAttribute)
					{
						s.setAttribute("src", th.url);
					}
					else
					{
						s.src = th.url;
					}

					b.insertBefore(s, b.lastChild);
				};
			}
			else
			{
				this.span = s = d.createElement("SPAN");
				s.style.display = "none";
				b.insertBefore(s, b.lastChild);
				s.innerHTML = "Workaround for IE.<s" + "cript></" + "script>";
				var _49 = function()
				{
					s = s.getElementsByTagName("SCRIPT")[0];
					s.language = "JavaScript";

					if (s.setAttribute)
					{
						s.setAttribute("src", th.url);
					}
					else
					{
						s.src = th.url;
					}
				};
			}

			JsHttpRequest.setTimeout(_49, 10);
			return null;
		};
	}
};

JsHttpRequest.LOADERS.form =
{
	loader: function(req)
	{
		JsHttpRequest.extend(req._errors,
		{
			form_el_not_belong: "Element \"%\" does not belong to any form!",
			form_el_belong_diff: "Element \"%\" belongs to a different form. All elements must belong to the same form!",
			form_el_inv_enctype: "Attribute \"enctype\" of the form must be \"%\" (for IE), \"%\" given."
		});

		this.load = function()
		{
			var th = this;

			if (!th.method)
			{
				th.method = "POST";
			}

			th.url += (th.url.indexOf("?") >= 0 ? "&" : "?") + "JsHttpRequest=" + th.id + "-" + "form";

			if (th.method == "GET")
			{
				if (th.queryText)
				{
					th.url += (th.url.indexOf("?") >= 0 ? "&" : "?") + th.queryText;
				}

				if (th.url.length > JsHttpRequest.MAX_URL_LEN)
				{
					return
					[
						"url_too_long",
						JsHttpRequest.MAX_URL_LEN
					];
				}

				var p = th.url.split("?", 2);
				th.url = p[0];
				th.queryText = p[1] || "";
			}

			var _4d = null;
			var _4e = false;

			if (th.queryElem.length)
			{
				if (th.queryElem[0].e.tagName.toUpperCase() == "FORM")
				{
					_4d = th.queryElem[0].e;
					_4e = true;
					th.queryElem = [];
				}
				else
				{
					_4d = th.queryElem[0].e.form;

					for (var i = 0; i < th.queryElem.length; i++)
					{
						var e = th.queryElem[i].e;

						if (!e.form)
						{
							return
							[
								"form_el_not_belong",
								e.name
							];
						}

						if (e.form != _4d)
						{
							return
							[
								"form_el_belong_diff",
								e.name
							];
						}
					}
				}

				if (th.method == "POST")
				{
					var _51 = "multipart/form-data";
					var _52 = (_4d.attributes.encType && _4d.attributes.encType.nodeValue) || (_4d.attributes.enctype && _4d.attributes.enctype.value) || _4d.enctype;

					if (_52 != _51)
					{
						return
						[
							"form_el_inv_enctype",
							_51,
							_52
						];
					}
				}
			}

			var d = _4d && (_4d.ownerDocument || _4d.document) || document;
			var _54 = "jshr_i_" + th.id;
			var s = th.span = d.createElement("DIV");
			s.style.position = "absolute";
			s.style.display = "none";
			s.style.visibility = "hidden";
			s.innerHTML = (_4d ? "" : "<form" + (th.method == "POST" ? " enctype=\"multipart/form-data\" method=\"post\"" : "") + "></form>") + "<iframe name=\"" + _54 + "\" id=\"" + _54 + "\" style=\"width:0px; height:0px; overflow:hidden; border:none\"></iframe>";

			if (!_4d)
			{
				_4d = th.span.firstChild;
			}

			d.body.insertBefore(s, d.body.lastChild);
			var _56 = function(e, _58)
			{
				var sv = [];
				var _5a = e;

				if (e.mergeAttributes)
				{
					var _5a = d.createElement("form");
					_5a.mergeAttributes(e, false);
				}

				for (var i = 0; i < _58.length; i++)
				{
					var k = _58[i][0], v = _58[i][1];
					sv[sv.length] =
					[
						k,
						_5a.getAttribute(k)
					];

					_5a.setAttribute(k, v);
				}

				if (e.mergeAttributes)
				{
					e.mergeAttributes(_5a, false);
				}

				return sv;
			};

			var _5e = function()
			{
				top.JsHttpRequestGlobal = JsHttpRequest;
				var _5f = [];

				if (!_4e)
				{
					for (var i = 0, n = _4d.elements.length; i < n; i++)
					{
						_5f[i] = _4d.elements[i].name;
						_4d.elements[i].name = "";
					}
				}

				var qt = th.queryText.split("&");

				for (var i = qt.length - 1; i >= 0; i--)
				{
					var _63 = qt[i].split("=", 2);
					var e = d.createElement("INPUT");
					e.type = "hidden";
					e.name = unescape(_63[0]);
					e.value = _63[1] != null ? unescape(_63[1]) : "";
					_4d.appendChild(e);
				}

				for (var i = 0; i < th.queryElem.length; i++)
				{
					th.queryElem[i].e.name = th.queryElem[i].name;
				}

				var sv = _56(_4d,
				[
					["action", th.url],
					["method", th.method],
					["onsubmit", null],
					["target", _54]
				]);

				_4d.submit();
				_56(_4d, sv);

				for (var i = 0; i < qt.length; i++)
				{
					_4d.lastChild.parentNode.removeChild(_4d.lastChild);
				}

				if (!_4e)
				{
					for (var i = 0, n = _4d.elements.length; i < n; i++)
					{
						_4d.elements[i].name = _5f[i];
					}
				}
			};

			JsHttpRequest.setTimeout(_5e, 100);
			return null;
		};
	}
};