var content;
var req;
var exefunction;

function start() {
	insert_html('test', 'index_ajax.php', 'act=imgframe&width=160&height=120&mode=2');
}

function insert_html(id, url, prm, async) {
	exefunction = "changehtml('" + id + "')";
	doAjax(url, prm, async);
}		

function sendForm_HTML(id_elem, url, form) {
	if (form == null) {
		alert('Niepoprawne źródło formularza!');
	}
	var prm = '';
	for (var x=0; x<form.elements.length; x++) {
		if (form.elements[x].name != '')
			prm += form.elements[x].name + '=' + form.elements[x].value + '&';
	}
	exefunction = "changehtml('" + id_elem + "')";
	doAjax(url, prm, true);
}

function autoHide(time, element) {
	var aElem = document.getElementById(element);
	if (aElem != null) {
		setTimeout("elemHide('" + element + "')", time);
	}
}

function elemHide(element) {
	aElem = document.getElementById(element);
	aElem.style.display = 'none';
}

function showIndicator() {
	var uiStatus = document.getElementById('uiStatus');
	if (uiStatus == null) {
		var uiStatus = document.createElement("div");
		uiStatus.setAttribute("style","position:absolute;width:100px;height:16px;left:0px;top:0px;font:normal 9px Tahoma;background:#FFFFFF;padding:2px;color:#330000;border:1px #CCCCCC solid;z-index:1000;background-image:url('gfx/indicator.gif');background-repeat:no-repeat;background-position: 2px 2px;text-indent:22px;line-height:16px;-moz-opacity: 0.75;opacity: 0.75; filter:alpha(opacity=90);");
		uiStatus.setAttribute("id","uiStatus");
		uiStatus.innerHTML = "Proszę czekać...";
		//document.body.insertBefore(uiStatus, document.body.firstChild);
		uiStatus.style.position = 'absolute'; uiStatus.style.top = '0px'; uiStatus.style.left = '0px'; uiStatus.style.width = '100px'; uiStatus.style.height = '16px'; uiStatus.style.font = 'normal 9px Tahoma'; uiStatus.style.background = '#FFFFFF'; uiStatus.style.padding = '2px'; uiStatus.style.color = '#330000'; uiStatus.style.height = '16px'; uiStatus.style.border = '1px #CCCCCC solid'; uiStatus.style.zIndex = '1000'; uiStatus.style.textIndent = '22px'; uiStatus.style.lineHeight = '16px'; uiStatus.style.backgroundImage = 'url("gfx/indicator.gif")'; uiStatus.style.backgroundRepeat = 'no-repeat'; uiStatus.style.backgroundPosition = '2px 2px'; uiStatus.style.opacity = '0.75'; uiStatus.style.filter = 'alpha(opacity=75)';
		document.body.appendChild(uiStatus);
	} else {
		document.getElementById('uiStatus').style.display='block';
	}
	//setTimeout("hideIndicator()", 2000);
}

function hideIndicator() {
	document.getElementById('uiStatus').style.display='none';
}

function changevalue(id){
	document.getElementById(String(id)).value = content;
}

function changehtml(id){
	document.getElementById(String(id)).innerHTML = content;
}

function doAjax(url, prm, async) {
	showIndicator();
	// if Mozilla, Safari etc
	if (window.XMLHttpRequest) 
		req = new XMLHttpRequest()
	// if IE
	else if (window.ActiveXObject){ 
		try {
		  req = new ActiveXObject("Msxml2.XMLHTTP")
		} 
		catch (e){
			try{ req = new ActiveXObject("Microsoft.XMLHTTP") }catch (e){}
		}
	} else {
		alert('Przeglądarka nie wspiera technologii AJAX!');
		exit() ;
	}

	content = null;
	if(!url || url==''){
	  alert('Brak pliku skryptu!');
	  return;
	} else { 
		fileurl = url;
		url = 'phpinc='+url ;
	}

	if(prm!='') url += '&' + prm;
    if(async!=false && async!=true) async=true;

    req.open('POST', './kwAjax.php' , async);
 
    req.setRequestHeader("Method", "POST " + './kwAjax.php' + " HTTP/1.1");
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	
	req.send(url);

	// handle status
	req.onreadystatechange = reqreadystatechange;

	function reqreadystatechange() {
	  if (req.readyState != 4)return;
		if (req.status == 200) {
		  content = req.responseText;
		  //hideIndicator();
		  setTimeout("hideIndicator()", 200);
		  try {
			eval(exefunction);
		  }catch (e){
			alert('Błąd podczas wywoływnia funkcji!');
		  }
		}else{
		  alert('Błąd podczas pobierania danych!');
		}
	}
}