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

function _idX(n) { //if (document.getElementById(n)==null) alert(n);
return document.getElementById(n);}


function stripslashes(str) {str=str.replace(/\\'/g,'\'');str=str.replace(/\\"/g,'"');str=str.replace(/\\\\/g,'\\');str=str.replace(/\\0/g,'\0');return str;}

function sack(file){
	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
	this.requestFile = file;
	this.method = "POST";
	this.URLString = "";
	this.encodeURIString = true;
	this.execute = false;

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

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};
	
	this.setVar = function(name, value){
		if (this.URLString.length < 3){
			this.URLString = name + "=" + value;
		} else {
			this.URLString += "&" + name + "=" + value;
		}
	}
	
	this.encVar = function(name, value){
		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
	}
	
	this.encodeURLString = function(string){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			varArray[i] = this.encVar(urlVars[0],urlVars[1]);
		}
	return varArray.join('&');
	}
	
	this.runResponse = function(){
		eval(this.response);
	}
	
	this.runAJAX = function(urlstring){
		this.responseStatus = new Array(2);
		if(this.failed && this.AjaxFailedAlert){ 
			alert(this.AjaxFailedAlert); 
		} else {
			if (urlstring){ 
				if (this.URLString.length){
					this.URLString = this.URLString + "&" + urlstring; 
				} else {
					this.URLString = urlstring; 
				}
			}
			if (this.encodeURIString){
				var timeval = new Date().getTime(); 
				this.URLString = this.encodeURLString(this.URLString);
				this.setVar("rndval", timeval);
			}
			if (this.element) { this.elementObj = document.getElementById(this.element); }
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
					} catch (e) {}
				}

				this.xmlhttp.send(this.URLString);
				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;
							self.onCompletion();
							if(self.execute){ self.runResponse(); }
							if (self.elementObj) {
								var elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							self.URLString = "";
						break;
					}
				};
			}
		}
	};
this.createAJAX();
}

var ajaxObjects = new Array();
var ajaxO = new Array();

var enableCache = true;
var jsCache = new Array();

function ajax_showContent(divId,ajaxIndex,url){
var targetObj = _idX(divId);
targetObj.innerHTML = ajaxO[ajaxIndex].response;
if(enableCache){jsCache[url] = ajaxO[ajaxIndex].response;}
ajaxO[ajaxIndex] = false;
ajax_parseJs(targetObj)
}

function ajax_loadContent(divId,url) {
if(enableCache && jsCache[url]){	_idX(divId).innerHTML = jsCache[url];return;}
var ajaxIndex = ajaxO.length;
_idX(divId).innerHTML = '<div class="ce vel bo ematov edcap">Nahrávám stranu - moment prosím...</div><div class="ce mal dcap">( to může trvat i několik sekund )</div><div class="ematov ce"><img src="http://86.63.194.248/lb/loading.gif"></div>';
ajaxO[ajaxIndex] = new sack();
ajaxO[ajaxIndex].requestFile = url;
ajaxO[ajaxIndex].onCompletion = function(){ ajax_showContent(divId,ajaxIndex,url); };
ajaxO[ajaxIndex].runAJAX();
}

function ajax_parseJs(obj) {
var scriptTags = obj.getElementsByTagName('SCRIPT');
var string = '';
var jsCode = '';
for(var no=0;no<scriptTags.length;no++){	
	if(scriptTags[no].src){
        var head = document.getElementsByTagName("head")[0];
        var scriptObj = document.createElement("script");

        scriptObj.setAttribute("type", "text/javascript");
        scriptObj.setAttribute("src", scriptTags[no].src);  	
	}else{
		if(navigator.userAgent.indexOf('Opera')>=0){
			jsCode = jsCode + scriptTags[no].text + '\n';
		}
		else
			jsCode = jsCode + scriptTags[no].innerHTML;	
	}
	
}
if(jsCode)ajax_installScript(jsCode);
}

function ajax_installScript(script){		
if (!script) return;		
if (window.execScript){
   window.execScript(script)
}else if(window.jQuery && jQuery.browser.safari){
   window.setTimeout(script,0);
}else{        	
   window.setTimeout( script, 0 );
} 
}	
	
function uni_get_result(ajaxIndex,putobj) {
   rt=ajaxO[ajaxIndex].xmlhttp.responseText;
   if (putobj!='') _idX(putobj).innerHTML=stripslashes(rt);
}
function uni_get(act,par,putobj) {
var ajaxIndex = ajaxO.length;
ajaxO[ajaxIndex] = new sack();
ajaxO[ajaxIndex].requestFile = '/scripts/action_'+act+'.php?'+par+"&tick="+Math.ceil( Math.random()*9999);
ajaxO[ajaxIndex].onCompletion = function(){ uni_get_result(ajaxIndex,putobj); };
ajaxO[ajaxIndex].runAJAX();
}