var subwindow=0;
var bnumb = navigator.appVersion;
var rel = bnumb.substring( 0 , 2 );
var bname = navigator.appName;
var selectedPreviewImage=0;


test ();

function test () {
	if ((parseInt( rel ) >= 3.0 && bname=="Netscape") || (parseInt( rel ) >= 4.0 && bname=="Microsoft Internet Explorer"))
		{
		loadPictures();
		}
}

function setPreviewImageText(ImageText,ImageNumber) {
	if(PreviewImageElements[selectedPreviewImage]["PreviewImageText"] != ""){
		ElementNode = document.getElementById("imagedescription");
		ElementNode.firstChild.nodeValue = ImageText;
	}
	ElementNode = document.getElementById("imagepointer");
	ElementNode.firstChild.nodeValue = "Bild "+ImageNumber+"/"+ImageNum;
}


function getNextPreviewImage()
{
	if(selectedPreviewImage<(ImageNum-1)){
		selectedPreviewImage++;
	}else{
		selectedPreviewImage=0;
	}
	//alert("selectedPreviewImage = "+selectedPreviewImage);
	//alert(PreviewImageElements[selectedPreviewImage]["PreviewImageSrc"]);
	//alert("Bildtext = " + PreviewImageElements[selectedPreviewImage]["PreviewImageText"]);
	setPreviewImageText(PreviewImageElements[selectedPreviewImage]["PreviewImageText"],(selectedPreviewImage+1));
  	document.images['articleImagePreview'].src=PreviewImageElements[selectedPreviewImage]["PreviewImageSrc"];
}

function getPreviousPreviewImage()
{
	if(selectedPreviewImage==0){
		selectedPreviewImage=ImageNum-1;
	}else{
		selectedPreviewImage--;
	}
	setPreviewImageText(PreviewImageElements[selectedPreviewImage]["PreviewImageText"],(selectedPreviewImage+1));
	document.images['articleImagePreview'].src=PreviewImageElements[selectedPreviewImage]["PreviewImageSrc"];
}

function ClosePopUp()
{
  if (!subwindow)
    return;
  if (subwindow.closed)
    return;
  subwindow.close();
}

function openWindow(windowURL)
{
  var windowAttributes="location=no,menubar=no,toolbar=no,status=no";
  windowAttributes+=",resizable=yes,scrollbars=yes,width=500,height=400";
  ClosePopUp();
  var filename = PreviewImageElements[selectedPreviewImage]["OriginalImageSrc"];
  filename = filename.substr(filename.lastIndexOf("/")+1, filename.length-filename.lastIndexOf("/")-1);
  subwindow=window.open("../../inc/frontend/gallery/showpicture.php?img="+filename,"popup",windowAttributes);
  subwindow.moveTo(10,50); /* Fenster nach links oben schieben */
}