//{{{ Ajax Core

// debug switcher
	var _ajaxDebug = false;
//---------------------------------------------------------------------------}}}

//{{{ ajaxEncode
/**
 * create urlencoded POST-data for ajax
 * @param object params object containing params to POST
 * @return string
 */
function ajaxEncode(params)
{
	var result = '';
	var i = 0;
	var j = 0;
	if ( _ajaxDebug ) {
		alert(params.toString());
	}
	for ( i in params )
	{
		if ( i != 'ajaxTransmit' )
		{
			if ( 'object' == typeof params[i] )
			{
				for ( j = 0; j < params[i].length; j++)
				{
					if ( 'object' == typeof params[i][j] ) {
						result += '&' + params[i][j][0] + '=' + encodeURIComponent( params[i][j][1] );
					}
					else {
						result += '&' + i +'[' +j+ ']' + '=' + encodeURIComponent( params[i][j] );
					}
				}
			}
			else {
				result += '&' + i + '=' + encodeURIComponent( params[i] );
			}
		}
	}
	if ( _ajaxDebug ) {
		alert(result.toString());
	}
	return result;
}
//---------------------------------------------------------------------------}}}
//{{{ ajaxSend
/**
 * make request to the remote ajax handler
 * @param int action action code
 * @param object params request params
 */
function ajaxSend( action, params )
{
	function ajaxBindCallback()
	{
		if ( 4 == ajaxRequest.readyState )
		{
			if ( 200 == ajaxRequest.status )
			{
				if ( _ajaxDebug ) {
					alert(ajaxRequest.responseText);
				}
				eval( "var result = ("+ajaxRequest.responseText+")" );
				if ( result.AJAX_ERROR ) {
					createMessage( result.AJAX_ERROR, 'red', 3000 );
				}
				else
				{
					if ( ajaxTransmit ) {
						result.ajaxTransmit = ajaxTransmit;
					}
					handleAjax( result );
				}
			}
			else {
				alert("Error:\n" + ajaxRequest.status + ":\t" + ajaxRequest.statusText + "\n" + ajaxRequest.responseText);
			}
		}
	}

	var ajaxRequest = null;
	if ( params.ajaxTransmit ) {
		var ajaxTransmit = params.ajaxTransmit;
	}

	if (window.XMLHttpRequest) {		// mozilla
		ajaxRequest = new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {	// ie
		ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (ajaxRequest)
	{
		ajaxRequest.onreadystatechange = ajaxBindCallback;
		ajaxRequest.open('POST', ajaxUrl, true );
		ajaxRequest.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		ajaxRequest.send( 'action=' + action + ajaxEncode(params) );
	}
	else {
		createMessage( 'Use modern browser!', 'red', 3000 );
	}
}
//---------------------------------------------------------------------------}}}

/*============================================================================*
 *  END OF Ajax Core                                                          *
 *=========================================================================}}}*/

function hideMessage()
{
   with (document.getElementById('ajax_message'))
   {
		innerHTML = "";
		style.visibility = "hidden";
		style.color = "black";
   }
}

function createMessage(text, color, time_to_show)
{
	with(document.getElementById('ajax_message'))
	{
		style.visibility = "visible";
		innerHTML        = text;
		style.color      = color;
	}
	if ( time_to_show > 0 ) {
		setTimeout("hideMessage()", time_to_show);
	}
}

window.onscroll = setX;

function setX()
{
	if(document.getElementById('ajax_message')){
		document.getElementById('ajax_message').style.pixelTop = document.body.scrollTop + 200;
	}
}

/* Simple AJAX Code-Kit (SACK) v1.6.1 */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence,
   see documentation or authors website for more details */

/* Simple AJAX Code-Kit (SACK) v1.6.1 */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence,
   see documentation or authors website for more details */

function sack(file) {
	this.xmlhttp = null;

	this.resetData = function() {
		this.method = "POST";
  		this.queryStringSeparator = "?";
		this.argumentSeparator = "&";
		this.URLString = "";
		this.encodeURIString = true;
  		this.execute = false;
  		this.element = null;
		this.elementObj = null;
		this.requestFile = file;
		this.vars = new Object();
		this.responseStatus = new Array(2);
  	};

	this.resetFunctions = function() {
  		this.onLoading = function() { };
  		this.onLoaded = function() { };
  		this.onInteractive = function() { };
  		this.onCompletion = function() { };
  		this.onError = function() { };
		this.onFail = function() { };
	};

	this.reset = function() {
		this.resetFunctions();
		this.resetData();
	};

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e1) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e2) {
				this.xmlhttp = null;
			}
		}

		if (! this.xmlhttp) {
			if (typeof XMLHttpRequest != "undefined") {
				this.xmlhttp = new XMLHttpRequest();
			} else {
				this.failed = true;
			}
		}
	};

	this.setVar = function(name, value){
		this.vars[name] = Array(value, false);
	};

	this.encVar = function(name, value, returnvars) {
		if (true == returnvars) {
			return Array(encodeURIComponent(name), encodeURIComponent(value));
		} else {
			this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);
		}
	}

	this.processURLString = function(string, encode) {
		encoded = encodeURIComponent(this.argumentSeparator);
		regexp = new RegExp(this.argumentSeparator + "|" + encoded);
		varArray = string.split(regexp);
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split("=");
			if (true == encode){
				this.encVar(urlVars[0], urlVars[1]);
			} else {
				this.setVar(urlVars[0], urlVars[1]);
			}
		}
	}

	this.createURLString = function(urlstring) {
		if (this.encodeURIString && this.URLString.length) {
			this.processURLString(this.URLString, true);
		}

		if (urlstring) {
			if (this.URLString.length) {
				this.URLString += this.argumentSeparator + urlstring;
			} else {
				this.URLString = urlstring;
			}
		}

		// prevents caching of URLString
		this.setVar("rndval", new Date().getTime());

		urlstringtemp = new Array();
		for (key in this.vars) {
			if (false == this.vars[key][1] && true == this.encodeURIString) {
				encoded = this.encVar(key, this.vars[key][0], true);
				delete this.vars[key];
				this.vars[encoded[0]] = Array(encoded[1], true);
				key = encoded[0];
			}

			urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];
		}
		if (urlstring){
			this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);
		} else {
			this.URLString += urlstringtemp.join(this.argumentSeparator);
		}
	}

	this.runResponse = function() {
		eval(this.response);
	}

	this.runAJAX = function(urlstring) {
		if (this.failed) {
			this.onFail();
		} else {
			this.createURLString(urlstring);
			if (this.element) {
				this.elementObj = document.getElementById(this.element);
			}
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
					try {
						this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
					} catch (e) { }
				}

				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState) {
						case 1:
							self.onLoading();
							break;
						case 2:
							self.onLoaded();
							break;
						case 3:
							self.onInteractive();
							break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;

							if (self.execute) {
								self.runResponse();
							}

							if (self.elementObj) {
								elemNodeName = self.elementObj.nodeName;
								elemNodeName = elemNodeName.toLowerCase();
								if (elemNodeName == "input"
								|| elemNodeName == "select"
								|| elemNodeName == "option"
								|| elemNodeName == "textarea") {
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							if (self.responseStatus[0] == "200") {
								self.onCompletion();
							} else {
								self.onError();
							}
							/* These lines were added by Alf Magne Kalleland ref. info on the sack home page. It prevents memory leakage in IE */
							self.URLString = "";
							delete self.xmlhttp['onreadystatechange'];
							self.xmlhttp=null;
							self.responseStatus=null;
							self.response=null;
							self.responseXML=null;
							
							break;
					}
				};

				this.xmlhttp.send(this.URLString);
			}
		}
	};

	this.reset();
	this.createAJAX();
}