function SOAPClientParameters()
{
	var _pl = new Array();
	this.add = function(name, value)
	{
		_pl[name] = value;
		return this;
	}
	this.toXml = function()
	{
		var xml = "";
		for (var p in _pl)
		{
			if (typeof(_pl[p]) != "function")
				xml += "<" + p + ">" + _pl[p].toString().replace(/&/g, "&amp;").replace(/</g, "<").replace(/>/g, ">") + "</" + p + ">";
		}
		return xml;
	}
}

function SOAPClient()
{
}

SOAPClient.invoke = function(url, method, parameters, async, callback)
{
	if (async)
		SOAPClient._loadWsdl(url, method, parameters, async, callback);
	else
		return SOAPClient._loadWsdl(url, method, parameters, async, callback);
}

SOAPClient._loadWsdl = function(url, method, parameters, async, callback)
{
	// load from cache?
	var wsdl = SOAPClient_cacheWsdl[url];
	if (wsdl + "" != "" && wsdl + "" != "undefined")
		return SOAPClient._sendSoapRequest(url, method, parameters, async, callback, wsdl);
	// get wsdl
	var xmlHttp = SOAPClient._getXmlHttp();
	xmlHttp.open("GET", url + "?wsdl", async);
	if (async)
	{
		xmlHttp.onreadystatechange = function()
		{
			if (xmlHttp.readyState == 4)
				SOAPClient._onLoadWsdl(url, method, parameters, async, callback, xmlHttp);
		}
	}
	xmlHttp.send(null);
	if (!async)
		return SOAPClient._onLoadWsdl(url, method, parameters, async, callback, xmlHttp);
}

SOAPClient_cacheWsdl = new Array();

SOAPClient._onLoadWsdl = function(url, method, parameters, async, callback, req)
{
	var wsdl = req.responseXML;
	SOAPClient_cacheWsdl[url] = wsdl;
	return SOAPClient._sendSoapRequest(url, method, parameters, async, callback, wsdl);
}

SOAPClient._sendSoapRequest = function(url, method, parameters, async, callback, wsdl)
{
	var ns = (wsdl.documentElement.attributes["targetNamespace"] + "" == "undefined") ? wsdl.documentElement.attributes.getNamedItem("targetNamespace").nodeValue : wsdl.documentElement.attributes["targetNamespace"].value;
	var sr = "<?xml version=\"1.0\" encoding=\"utf-8\"?><soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\"><soap:Body><" + method + " xmlns=\"" + ns + "\">" + parameters.toXml() + "</" + method + "></soap:Body></soap:Envelope>";
	var xmlHttp = SOAPClient._getXmlHttp();
	xmlHttp.open("POST", url, async);
	var soapaction = ((ns.lastIndexOf("/") != ns.length - 1) ? ns + "/" : ns) + method;
	xmlHttp.setRequestHeader("SOAPAction", soapaction);
	xmlHttp.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
	if (async)
	{
		xmlHttp.onreadystatechange = function()
		{
			if(xmlHttp.readyState == 4)
				SOAPClient._onSendSoapRequest(method, async, callback, wsdl, xmlHttp);
		}
	}
	xmlHttp.send(sr);
	if (!async)
		return SOAPClient._onSendSoapRequest(method, async, callback, wsdl, xmlHttp);
}

SOAPClient._onSendSoapRequest = function(method, async, callback, wsdl, req)
{
	var o = null;
	var nd = SOAPClient._getElementsByTagName(req.responseXML, "response");
	if (nd.length == 0)
	{
		if (req.responseXML.getElementsByTagName("faultcode").length > 0)
			throw new Error(500, req.responseXML.getElementsByTagName("faultstring")[0].childNodes[0].nodeValue);
	}
	else
		o = SOAPClient._soapresult2object(nd[0], wsdl);
	if (callback)
		callback(o, req.responseXML);
	if (!async)
		return o;
}

SOAPClient._soapresult2object = function(node, wsdl)
{
	return SOAPClient._node2object(node, wsdl);
}

SOAPClient._node2object = function(node, wsdl)
{
	// null node
	if (node == null)
		return null;
	// text node
	if (node.nodeType == 3 || node.nodeType == 4)
		return SOAPClient._extractValue(node, wsdl);
	// leaf node
	if (node.childNodes.length == 1 && (node.childNodes[0].nodeType == 3 || node.childNodes[0].nodeType == 4))
		return SOAPClient._node2object(node.childNodes[0], wsdl);

	var isarray = false;
	if (node.attributes.getNamedItem("SOAP-ENC:arrayType") != null)
		isarray = SOAPClient._getArrayNameFromWsdl(node.attributes.getNamedItem("SOAP-ENC:arrayType").nodeValue.substring(4), wsdl) != "";
	// object node
	if (!isarray)
	{
		var obj = null;
		if (node.hasChildNodes())
			obj = new Object();
		for (var i = 0; i < node.childNodes.length; i++)
		{
			var p = SOAPClient._node2object(node.childNodes[i], wsdl);
			obj[node.childNodes[i].nodeName] = p;
		}
		return obj;
	}
	// list node
	else
	{
		// create node ref
		var l = new Array();
		for(var i = 0; i < node.childNodes.length; i++)
			l[l.length] = SOAPClient._node2object(node.childNodes[i], wsdl);
		return l;
	}
	return null;
}

SOAPClient._extractValue = function(node, wsdl)
{
	var value = node.nodeValue;
	if (value == null)
		return null;

	switch(SOAPClient._getTypeFromWsdl(node.parentNode.nodeName, wsdl).toLowerCase())
	{
		case 'xsd:string':
				return value;
		case 'xsd:boolean':
			return value + "" == "true";
		case 'xsd:byte':
			return (value == '255') ? null : value;
		case 'xsd:unnsignedbyte':
			return (value == '510') ? null : value;
		case 'xsd:short':
			return (value == '32767') ? null : value;
		case 'xsd:unsignedshort':
			return (value == '65534') ? null : value;
		case "xsd:int":
		case "xsd:long":
			return (value != null && value != '2147483647') ? parseInt(value + '', 10) : null;
		case "xsd:unsignedint":
		case "xsd:unsignedlong":
		case "xsd:double":
			return (value != null && value != '4294967295') ? parseInt(value + '', 10) : null;
		case "xsd:float":
		case "xsd:decimal":
			return (value != null && value != '4294967295') ? parseFloat(value + '') : null;
		case "xsd:datetime":
			return (value != null && value != '1940-01-01T00:00:00') ? value.replace(/T/gi, ' ') : null;

/*				return null;
			else
			{
				var dt = new Date();
				var dtArray = value.split('T');
				var tmp = dtArray[1].split(':');
				dt.setUTCHours(tmp[0], tmp[1], tmp[2]);
				tmp = dtArray[0].split('-');
				dt.setUTCFullYear(tmp[0], tmp[1], tmp[2]);
				return dt.formatDate('YYYY-M-d hh:mm:ss');

				value = value + "";
//				value = value.substring(0, value.lastIndexOf("."));
				value = value.replace(/T/gi, ' ');
				value = value.replace(/-/gi, '/');
				var d = new Date();
				d.setTime(Date.parse(value));
				return d;


/*
tmp = document.getElementById('semesterStartDate').value.split("-");
var semesterStartDate = new Date(parseInt(tmp[0]),parseInt(tmp[1]-1),parseInt(tmp[2]-0));


			}*/
		default:
			return value;
			break;
	}
/*
				case 'xsd:byte':
					if ($this->IsNull())
						return 255;
				case 'xsd:unsignedByte':
					if ($this->IsNull())
						return 510;
				case 'xsd:short':
					if ($this->IsNull())
						return 32767;
				case 'xsd:unsignedShort':
					if ($this->IsNull())
						return 65534;
				case 'xsd:int':
				case 'xsd:long':
					if ($this->IsNull())
						return 2147483647;
				case 'xsd:unsignedInt':
				case 'xsd:unsignedLong':
				case 'xsd:float':
				case 'xsd:decimal':
					if ($this->IsNull())
						return 4294967295;
				case 'xsd:dateTime':
					if ($this->IsNull())
						return '1940-01-01T00:00:00';
					else
						return str_replace(' ', 'T', $this->m_Value);
				case 'xsd:string':
					if ($this->IsNull())
						return 'NULL';*/





}

SOAPClient._getTypeFromWsdl = function(elementname, wsdl)
{
	var ell = wsdl.getElementsByTagName("xsd:element");// IE
	if (ell.length == 0)
	{
		ell = wsdl.getElementsByTagName("element");    // MOZ
	}
	for(var i = 0; i < ell.length; i++)
	{
		if (ell[i].attributes["name"] + "" == "undefined")    // IE
		{
			if (ell[i].attributes.getNamedItem("name") != null && ell[i].attributes.getNamedItem("name").nodeValue == elementname && ell[i].attributes.getNamedItem("type") != null)
				return ell[i].attributes.getNamedItem("type").nodeValue;
		}
		else // MOZ
		{
			if (ell[i].attributes["name"] != null && ell[i].attributes["name"].value == elementname && ell[i].attributes["type"] != null)
				return ell[i].attributes["type"].value;
		}
	}
	return "";
}

SOAPClient._getArrayNameFromWsdl = function(elementname, wsdl)
{
	elementname = elementname.substring(0, elementname.indexOf('[')) + "List";
	var ell = wsdl.getElementsByTagName("xsd:complexType");// IE
	if (ell.length == 0)
	{
		ell = wsdl.getElementsByTagName("complexType");    // MOZ
	}
	for(var i = 0; i < ell.length; i++)
	{
		if (ell[i].attributes["name"] + "" == "undefined")    // IE
		{
			if (ell[i].attributes.getNamedItem("name") != null && ell[i].attributes.getNamedItem("name").nodeValue == elementname)
				return ell[i].attributes.getNamedItem("name").nodeValue;
		}
		else // MOZ
		{
			if (ell[i].attributes["name"] != null && ell[i].attributes["name"].value == elementname)
				return ell[i].attributes["name"].value;
		}
	}
	return "";
}

SOAPClient._getElementsByTagName = function(document, tagName)
{
/*	try
	{
		return document.selectNodes(".//*[local-name()=\""+ tagName +"\"]");
	}
	catch (ex)
	{
alert("EXCEP: " + ex);
	}*/
	return document.getElementsByTagName(tagName);
}

SOAPClient._getXmlHttp = function()
{
	try
	{
		if(window.XMLHttpRequest)
		{
			var req = new XMLHttpRequest();
			if (req.readyState == null)
			{
				req.readyState = 1;
				req.addEventListener("load", function()
				{
					req.readyState = 4;
					if (typeof req.onreadystatechange == "function")
						req.onreadystatechange();
				},false);
			}
			return req;
		}
		if (window.ActiveXObject)
			return new ActiveXObject(SOAPClient._getXmlHttpProgID());
	}
	catch (ex)
	{
	}
		throw new Error("Your browser does not support XmlHttp objects");
}

SOAPClient._getXmlHttpProgID = function()
{
	if (SOAPClient._getXmlHttpProgID.progid)
		return SOAPClient._getXmlHttpProgID.progid;
	var progids = ["Msxml2.XMLHTTP.5.0", "Msxml2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP"];
	var o;
	for (var i = 0; i < progids.length; i++)
	{
		try
		{
			o = new ActiveXObject(progids[i]);
			return SOAPClient._getXmlHttpProgID.progid = progids[i];
		}
		catch (ex)
		{
		};
	}
	throw new Error("Could not find an installed XML parser");
}