// Letzter Request
var last_request=0;

// Lade Eintr‰ge alle x Sekunden
var aktiv = setInterval("loadData()",10000);

// Lade Eintr‰ge der Shoutbox
setTimeout('loadData();',1000);

// Setzen der Vaiable damit der Chat nicht zum DOS wird
var dosProtect = 0;

// Beendet die asb_loading-Anzeige
function asb_loadingEnd()
{
 //document.getElementById("asb_loading").innerHTML='';
 //document.getElementById('thumb').style.background='url(http://interarte.org/shoutbox/slider_n.png)';
}

// Funktion um zur letzten Nachricht zu scrollen
function Scrolling()
{
 if (document.getElementById('autoscroll'))
 {
  if (document.getElementById('autoscroll').checked)
  {
   var cdiv=document.getElementById('asb_contentwrap');
   cdiv.scrollTop=cdiv.scrollHeight;
  }
 }
}

// Funktion zum Laden der Einträge
function loadData()
{
// document.getElementById("asb_loading").innerHTML='<img src="loading.gif" alt="loading.gif" />';
// document.getElementById('thumb').style.background='url(http://interarte.org/shoutbox/slider_o.png)';

 var xmlHttp = false;
 // XML HttpRequest-Instanz für IE < Version 6 erstellen
 try
 {
  xmlHttp  = new ActiveXObject("Msxml2.XMLHTTP");
 }
 catch(e)
 {
  try
  {
   xmlHttp  = new ActiveXObject("Microsoft.XMLHTTP");
  }
  catch(e)
  {
   xmlHttp  = false;
  }
 }
 // XML HttpRequest-Instanz f¸r f¸r Mozilla, Opera, Safari usw. erstellen
 if (!xmlHttp  && typeof XMLHttpRequest != 'undefined')
 {
  xmlHttp = new XMLHttpRequest();
 }

 // Wenn Status entsprechend führe Aktion durch
 if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
 {
  // Führe Aktion aus
  xmlHttp.open('GET', 'getdata.php?last_request='+last_request, true);
  // Sobald sich der Zustand ändert führe Aktion aus.
  xmlHttp.onreadystatechange = function ()
  {
   if (xmlHttp.readyState == 4)
   {
    // Dos Variable erhöhen
    dosProtect = dosProtect + 1;

    var response=xmlHttp.responseText;

	if (response.length>0)
	{
     // in erster Zeile steht der Timestamp -> extrahieren
	 zeilen=response.split("<br />");
	 //last_request=zeilen[0];
//alert(last_request);
	 var anzahl_zeilen=zeilen.length;
//alert(anzahl_zeilen);
	 for (i=1;i<anzahl_zeilen;i++)
	 {
 //alert (zeilen[i]);
      
      Text = zeilen[i] + Text;
      var Text = zeilen[i];
	  if (i<anzahl_zeilen-1) Text = '<br />' + Text;
	  document.getElementById("asb_content").innerHTML=Text;
	 }
	}

    if(dosProtect >= 500)
    {
     // Meldung nach 50 Aufrufen ohne Interaktion
     var dosProtectText = '<div class="even">Ladelimit wurde erreicht.';
     var dosProtectText = dosProtectText + '<br />Bitte Seite neu laden ...</div>';
     document.getElementById("asb_content").innerHTML = dosProtectText;
     clearInterval(aktiv);
    }
   }
   // Immer zum Ende Scrollen
   //setTimeout('Scrolling();',1);
   //setTimeout('Scrolling();',750);
   //setTimeout('Scrolling();',1500);
  }
  xmlHttp.send(null);
 }
 // asb_loading Anzeige beenden
 setTimeout('asb_loadingEnd();',1000);
}




// Funktion zum Speichern der Eintr‰ge
function sendComment()
{
 document.getElementById("asb_loading").innerHTML='<img src="loading.gif" alt="loading" />';
 var xmlHttp2 = false;
 // XML HttpRequest-Instanz f¸r IE < Version 6 erstellen
 try
 {
  xmlHttp2  = new ActiveXObject("Msxml2.XMLHTTP");
 }
 catch(e)
 {
  try
  {
   xmlHttp2  = new ActiveXObject("Microsoft.XMLHTTP");
  }
  catch(e)
  {
   xmlHttp2  = false;
  }
 }
 // XML HttpRequest-Instanz f¸r f¸r Mozilla, Opera, Safari usw. erstellen
 if (!xmlHttp2  && typeof XMLHttpRequest != 'undefined')
 {
  xmlHttp2 = new XMLHttpRequest();
 }


 if (xmlHttp2)
 {
  var txtMessage = encodeURIComponent(document.frmshoutbox.txtmessage.value);
  var txtName    = encodeURIComponent(document.frmshoutbox.txtname.value);
  if (txtMessage == '' || txtName == '')
  {
   //alert("Error: You have to enter a message before!");
  }
  else
  {
   if (xmlHttp2.readyState == 4 || xmlHttp2.readyState == 0)
   {
    xmlHttp2.open('POST', 'setdata.php');
    xmlHttp2.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    xmlHttp2.send('message='+txtMessage+"&name="+txtName+"&last_request="+last_request);
   }
   else
   {
    setTimeout('sendComment();',1000);
   }
   if (xmlHttp2.readyState == 4 || xmlHttp2.readyState == 0)
   {
    dosProtect = 0;
    setTimeout('loadData();',1000);
   }
   else
   {
    // Lade Eintr‰ge zeitversetzt und resette DOS Protect
    dosProtect = 0;
    setTimeout('loadData();',1000);
   }
  }
 }
 // Leere das Eingabefeld
 document.frmshoutbox.txtmessage.value = '';
 // Cursor in das Textfeld setzen
 document.frmshoutbox.txtmessage.focus();
}








/**************************************************
 * dom-drag.js
 * 09.25.2001
 * www.youngpup.net
 * Script featured on Dynamic Drive (http://www.dynamicdrive.com) 12.08.2005
 **************************************************
 * 10.28.2001 - fixed minor bug where events
 * sometimes fired off the handle, not the root.
 **************************************************/

var Drag = {

	obj : null,

	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
	{
		o.onmousedown	= Drag.start;

		o.hmode			= bSwapHorzRef ? false : true ;
		o.vmode			= bSwapVertRef ? false : true ;

		o.root = oRoot && oRoot != null ? oRoot : o ;

		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";

		o.minX	= typeof minX != 'undefined' ? minX : null;
		o.minY	= typeof minY != 'undefined' ? minY : null;
		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
		o.maxY	= typeof maxY != 'undefined' ? maxY : null;

		o.xMapper = fXMapper ? fXMapper : null;
		o.yMapper = fYMapper ? fYMapper : null;

		o.root.onDragStart	= new Function();
		o.root.onDragEnd	= new Function();
		o.root.onDrag		= new Function();
	},

	start : function(e)
	{
		var o = Drag.obj = this;
		e = Drag.fixE(e);
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		o.root.onDragStart(x, y);

		o.lastMouseX	= e.clientX;
		o.lastMouseY	= e.clientY;

		if (o.hmode) {
			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
		} else {
			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
		}

		if (o.vmode) {
			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
		} else {
			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
		}

		document.onmousemove	= Drag.drag;
		document.onmouseup		= Drag.end;

		return false;
	},

	drag : function(e)
	{
		e = Drag.fixE(e);
		var o = Drag.obj;

		var ey	= e.clientY;
		var ex	= e.clientX;
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		var nx, ny;

		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);

		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));

		if (o.xMapper)		nx = o.xMapper(y)
		else if (o.yMapper)	ny = o.yMapper(x)

		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
		Drag.obj.lastMouseX	= ex;
		Drag.obj.lastMouseY	= ey;

		Drag.obj.root.onDrag(nx, ny);
		return false;
	},

	end : function()
	{
		document.onmousemove = null;
		document.onmouseup   = null;
		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
									parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
		Drag.obj = null;
	},

	fixE : function(e)
	{
		if (typeof e == 'undefined') e = window.event;
		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
		return e;
	}
};