// method for url decoding
function urldecode (str) {
    var histogram = {};
    var ret = str.toString();

    var replacer = function(search, replace, str) {
    var tmp_arr = [];
    tmp_arr = str.split(search);
    return tmp_arr.join(replace);
    };

    // The histogram is identical to the one in urlencode.
    histogram["'"]   = '%27';
    histogram['(']   = '%28';
    histogram[')']   = '%29';
    histogram['*']   = '%2A';
    histogram['~']   = '%7E';
    histogram['!']   = '%21';
    histogram['%20'] = '+';
    histogram['\u00DC'] = '%DC';
    histogram['\u00FC'] = '%FC';
    histogram['\u00C4'] = '%D4';
    histogram['\u00E4'] = '%E4';
    histogram['\u00D6'] = '%D6';
    histogram['\u00F6'] = '%F6';
    histogram['\u00DF'] = '%DF';
    histogram['\u20AC'] = '%80';
    histogram['\u0081'] = '%81';
    histogram['\u201A'] = '%82';
    histogram['\u0192'] = '%83';
    histogram['\u201E'] = '%84';
    histogram['\u2026'] = '%85';
    histogram['\u2020'] = '%86';
    histogram['\u2021'] = '%87';
    histogram['\u02C6'] = '%88';
    histogram['\u2030'] = '%89';
    histogram['\u0160'] = '%8A';
    histogram['\u2039'] = '%8B';
    histogram['\u0152'] = '%8C';
    histogram['\u008D'] = '%8D';
    histogram['\u017D'] = '%8E';
    histogram['\u008F'] = '%8F';
    histogram['\u0090'] = '%90';
    histogram['\u2018'] = '%91';
    histogram['\u2019'] = '%92';
    histogram['\u201C'] = '%93';
    histogram['\u201D'] = '%94';
    histogram['\u2022'] = '%95';
    histogram['\u2013'] = '%96';
    histogram['\u2014'] = '%97';
    histogram['\u02DC'] = '%98';
    histogram['\u2122'] = '%99';
    histogram['\u0161'] = '%9A';
    histogram['\u203A'] = '%9B';
    histogram['\u0153'] = '%9C';
    histogram['\u009D'] = '%9D';
    histogram['\u017E'] = '%9E';
    histogram['\u0178'] = '%9F';

    for (replace in histogram) {
        search = histogram[replace]; // Switch order when decoding
        ret = replacer(search, replace, ret) // Custom replace. No regexing  
    }

    // End with decodeURIComponent, which most resembles PHP's encoding functions
    ret = decodeURIComponent(ret);

    return ret;
}

function getURLParam(strParamName)
{ 
    var strReturn = ""; 
    var strHref = window.location.href; 
    if ( strHref.indexOf("?") > -1 )
    { 
        var strQueryString = strHref.substr(strHref.indexOf("?")).toLowerCase();	
        var aQueryString = strQueryString.split("&"); 
        for ( var iParam = 0; iParam < aQueryString.length; iParam++ )
        { 
            if (aQueryString[iParam].indexOf("=") > -1 ) 
            { 
                var aParam = aQueryString[iParam].split("="); 
                strReturn = aParam[1];	
                break; 
            } 
        } 
    } 
    return urldecode(strReturn);
} 

function LogonUserResponse(XMLHttpRequestObject,
    onCompleteCustomEventHandler)
{
    this.XMLHttpRequestObject = XMLHttpRequestObject;
    this.onCompleteCustomEventHandler = onCompleteCustomEventHandler;
    
    this.OnCompleteEventHandler = function()
    {//This method is executed in the XMLHttpRequestObject's context ('this' is for XMLHttpRequestObject)
    
        if(this.readyState == 4)
        {
            onCompleteCustomEventHandler(new LogonUserResponse(this));
        }
    }
    
    if(onCompleteCustomEventHandler != null)
    {
        this.XMLHttpRequestObject.onreadystatechange = this.OnCompleteEventHandler;
    }
    
    this.Success = function()
    {    
        if(this.XMLHttpRequestObject.status != 200
                || !this.IsXmlReponse())
        {
            return false;
        }
                
        var exitoElement = this.Xml().getElementsByTagName('exito')[0];
        var successResult = "unknonwn";
        
        var desc = this.Xml().getElementsByTagName('descripcion')[0];
        if (desc.text !=null )
        {
            successResult = (desc.text);        
        }
        else
        {    
            successResult = (desc.textContent);
        }
        
        return exitoElement != null && (exitoElement.text == 'true' || exitoElement.textContent == 'true');
    }
    
    this.Xml = function()
    {
        return this.XMLHttpRequestObject.responseXML;
    }
    
    this.IsXmlReponse = function()
    {
        return this.Xml() != null;
    }
}

function User()
{
	this.CreateXMLHttpRequestObject = function()
	{
		var XMLHttpRequestObject = null;

		if (window.XMLHttpRequest != null)
		{
			XMLHttpRequestObject = new XMLHttpRequest( );
		}
		else if (window.ActiveXObject != null)
		{
			XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
		}
	
		return XMLHttpRequestObject;
	}

	this.Logon = function(loginUrl,
	    user,
	    pass,
	    persist,
	    onCompleteCustomEventHandler)
	{
	    var XMLHttpRequestObject = this.CreateXMLHttpRequestObject();
	    var logonUserResponse = null;
	    
	    if(XMLHttpRequestObject == null)
	    {
	        alert("Current browser does not support AJAX!");
	        return logonUserResponse;
	    }
	    
	    logonUserResponse = new LogonUserResponse(XMLHttpRequestObject,
	        onCompleteCustomEventHandler);
	        
	    XMLHttpRequestObject.open("POST", loginUrl);
	    XMLHttpRequestObject.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');	    
	    XMLHttpRequestObject.send(this.BuildLogonUserBody(user,pass,persist));
	    
	    return logonUserResponse;
	}
	
	this.ChangePassword = function(loginUrl,
	    user,
	    pass,
	    newpass,
	    newpassconfirmation,
	    onCompleteCustomEventHandler)
	{
	    var XMLHttpRequestObject = this.CreateXMLHttpRequestObject();
	    var logonUserResponse = null;
	    
	    if(XMLHttpRequestObject == null)
	    {
	        alert("Current browser does not support AJAX!");
	        return logonUserResponse;
	    }
	    
	    logonUserResponse = new LogonUserResponse(XMLHttpRequestObject,
	        onCompleteCustomEventHandler);
	        
	    XMLHttpRequestObject.open("POST", loginUrl);
	    XMLHttpRequestObject.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');	    
	    XMLHttpRequestObject.send(this.BuildChangePaswordUserBody(user,pass,newpass,newpassconfirmation));
	    
	    return logonUserResponse;
	}

	this.BuildLogonUserBody = function(user,pass,persist)
	{
	    var body = null;
	    
	    body = 'User=' + user;
	    body += '&Pass=' + pass;
	    body += '&Persist=' + persist;
	    	    
	    return body;
	}
	
	this.BuildChangePaswordUserBody = function(user,pass,newpass,newpassconfirmation)
	{
	    var body = null;
	    
	    body = 'User=' + user;
	    body += '&Pass=' + pass;
	    body += '&NewPass=' + newpass;
	    body += '&NewPassConfirmation=' + newpassconfirmation;

	    return body;
	}
}
var LoginUserAjaxJSLoaded = true;