function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) { x.src=x.oSrc; x.filters(0).src=x.oSrc; }
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=(x.src) ? x.src : x.filters(0).src; x.src=a[i+2]; x.filters(0).src=a[i+2];}
}



var hexChars = "0123456789ABCDEF";

function dec2hex(dec) {
	var hexChars = "0123456789ABCDEF";
  return "%" + hexChars.charAt((dec - (dec % 16))/16) + hexChars.charAt(dec % 16);
}

function encodeURL(url)
{
	var safe = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_.!~*'()";

	var result = "";
	for (var i = 0; i < url.length; i++ ) {
		var ch = url.charAt(i);
	    if (ch == " ") {
		    result += "+";
		} else if (safe.indexOf(ch) != -1) {
		    result += ch;
		} else
      result += dec2hex(url.charCodeAt(i));
	}
  return result;
}

function createRequestObject() {
    var ro;
    if (window.ActiveXObject) {
      try {
        ro = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {
        ro = new ActiveXObject("Msxml2.XMLHTTP");
      }
    } else {
      ro = new XMLHttpRequest()
    }
    return ro;
}

var http = createRequestObject();



function sndReq(action) {
    http.open('get', action);
    http.onreadystatechange = handleResponse;
    http.send(null);
}


function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();
        
        if(response.indexOf('|' != -1)) {
            update = response.split('|');
            for(i=0;i<Math.floor(update.length/3)*3;i=i+3) {
              if(update[i] == "html")
                document.getElementById(update[i+1]).innerHTML = update[i+2];
              if(update[i] == "visibility")
                document.getElementById(update[i+1]).style.visibility = update[i+2];
              if(update[i] == "img") {
                document.getElementById(update[i+1]).src = update[i+2];
                updateDesc();
                loadNextPic();
              }
            }            
        }
    }
}

function goTo(id) {
		if(id<10)
		  document.getElementById("menuimg").src = "img/"+id+".jpg";
		if(http)
			sndReq("php/ajax.php?id="+id);
		else
			location.href="main.php?id="+id;
}

function reloadPage(id,leftright) {
	if(http)
		sndReq("php/ajax.php?id="+id+"&leftright="+leftright);
}

function openPage() {
   // Defining size
   window_height = 680;
   window_width  = 800;
   
   // Calculate margins
   margin_left = (screen.width / 2)  - (window_width  / 2);
   margin_top  = (screen.height / 2) - (window_height / 2);
   
   // Open the window
   window.open("main.php","Parigger","width="+window_width+", height="+window_height+", left="+margin_left+", top="+margin_top+", scrollbars=no, status=no, toolbar=no, menubar=no, resizable=no");
}

var book_previd = -1;
function openBook(id) {
	if(book_previd > 0)
		document.getElementById("book"+book_previd).style.display = "none";
	document.getElementById("book"+id).style.display = "block";
	book_previd = id;
}


var gbhttp = createRequestObject();

function gbDel(id) {		
    gbhttp.open('get', 'php/gb.php?gb_del='+prompt("Bitte Passwort eingeben","")+'&gb_delid='+id);
    gbhttp.onreadystatechange = gbdelhandleResponse;
    gbhttp.send(null);
}

function gbdelhandleResponse() {
    if(gbhttp.readyState == 4){
    	alert(gbhttp.responseText);
		reloadPage(4,"l");
    }
}


function gbhandleResponse() {
    if(gbhttp.readyState == 4){
    	if(gbhttp.responseText=="ok") {
			document.getElementById("gbstat").innerHTML = "Erfolgreich eingetragen.";			
    		document.getElementById("gb_submit").setAttribute("disabled","true");
			alert("Ihr Eintrag wurde erfolgreich übernommen!");
			reloadPage(4,"l");
		}else
			document.getElementById("gbstat").innerHTML = "Fehler beim Eintragen.";
    }
}
function postComment() {
	gb_name = document.getElementById("gb_name").value;
	gb_email = document.getElementById("gb_email").value;
	gb_comment = document.getElementById("gb_comment").value;
	
	error = "";
	if(gb_comment == "")
		error = "Es wurde kein Kommentar abgegeben";
	if(gb_name == "")
		error = "Es wurde kein Name angegeben";
	
	if(error!="") {
		alert(error);		
	}else{
		document.getElementById("gbstat").innerHTML = "Ihr Eintrag wird eingetragen...";
		gbhttp.open('post', 'php/gb.php');
		gbhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		gbhttp.onreadystatechange = gbhandleResponse;
		gbhttp.send("name="+encodeURL(gb_name)+"&email="+encodeURL(gb_email)+"&comment="+encodeURL(gb_comment));	
	}
}



function postForm() {
  //Textfields
  l_name = document.getElementById("contact_name").value;
  l_mail = document.getElementById("contact_mail").value;
  l_tel = document.getElementById("contact_tel").value;
  l_comment  = document.getElementById("contact_comment").value;
  
    

  
  var l_error = "";
  if(l_name.length < 2 || l_comment.length < 2)
    l_error = "Alle Pflichtfelder mit * müssen ordnungsgemäß ausgefüllt sein.";
    
  if(l_mail.length < 7 && l_mail.length > 0)
    l_error = "Es wurde eine ungültige Email-Adresse angegeben.";
  
  
    
  if(l_error != "") {
    alert(l_error)
  } else {
    http.open('post', 'php/post_mail.php');
    http.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    http.onreadystatechange = handleMailResponse;
    l_action  = "";
    l_action += 'name='+encodeURL(l_name);
    l_action += '&mail='+encodeURL(l_mail);
    l_action += '&tel='+encodeURL(l_tel);
    l_action += '&comment='+encodeURL(l_comment);
    http.send(l_action);
    document.getElementById("form_submit").setAttribute("disabled","true");
    document.getElementById("form_submit").value = "Sende Email...";
  }
}

function handleMailResponse() {
    if(http.readyState == 4){
      if(http.responseText == "sent") {
        document.getElementById("form_submit").value = "Email versandt!";      
        alert("Ihre Email wurde erfolgreich versandt!");  
      } else {
        alert("Leider ist beim Versenden der Email ein unbekannter Fehler aufgetreten\nBitte wenden Sie sich telefonisch an mich.\nMelden Sie bitte auch den Fehler.\n\nWir bitten um Entschuldigung");
        document.getElementById("form_submit").setAttribute("disabled","false");
        document.getElementById("form_submit").value = "Erneut senden!";
      }
    }
}