var js_popup =
	{
	settings :
		{
		
		triggerCssClass : "bildergallerie",
		
		parentDiv : {
			cssID : "js-popup"
			},
		
		popupBox : {
			cssID : "js-popup-box"
			},
		
		overlayBackground : {
			src_png : "graphiken/overlay.png",
			src_blank_gif : "graphiken/blank.gif"
			},

		
		fullViewImage : {
			cssID : "js-popup-image"
			},
		
		waitAnimation : {
			src : "graphiken/sanduhr.gif",
			alt : "Sanduhr",
			cssID : "js-popup-wait"
			},
		
		closeIcon : {
			src : "graphiken/beenden.gif",
			alt : "schließen",
			cssID : "js-popup-close"
			},
		
		resizeIcon : {
			src_resize : "graphiken/resize.gif",
			alt_resize : "verkleinern",
			src_fullSize : "graphiken/resize_full.gif",
			alt_fullSize : "volle Größe",
			cssID : "js-popup-resize"
			},
		
		waitText : "Bild wird geladen...",
		
		altCaption : "..."
		},




	controls :
		{
		oversize : "resize",
		boxWidth : 90,
		boxHeight : 90,
		boxMaxWidth : 40,
		boxMaxHeight : 100,
		winInnerWidth : 100,
		winInnerHeight : 100
		},




	htmlElements : { },




	functions :
		{
		
		preload : function (linkObj)
			{
			
			js_popup.preloadImage = new Image();
			js_popup.preloadImage.src = linkObj.href;

			var html_code = js_popup.settings.waitText
							+ ' <img src="' + js_popup.settings.waitAnimation.src
							+ '" alt="' + js_popup.settings.waitAnimation.alt
							+ '" id="' + js_popup.settings.waitAnimation.cssID
							+ '" />';

			js_popup.htmlElements.box.innerHTML = html_code;
			js_popup.controls.boxWidth = 200;
			js_popup.controls.boxHeight = 50;

			js_popup.functions.center();


			
			js_popup.preloadImage.caption = '';

			var caption = linkObj.getElementsByTagName("img")[0].getAttribute("alt");
			js_popup.preloadImage.caption = (caption && caption != "") ? caption : js_popup.settings.altCaption;

			js_popup.htmlElements.div.style.display = "block";

			if(js_popup.preloadImage.width > 0)
				{
				
				js_popup.functions.display();
				}
			else
				{
				
				js_popup.functions.addEvent("load", js_popup.preloadImage, js_popup.functions.display);
				js_popup.functions.addEvent("error", js_popup.preloadImage, js_popup.functions.display);
				}

			return false;
			},


		display : function ()
			{
			
			js_popup.htmlElements.box.style.display = "none";

			
			js_popup.controls.boxWidth = 90;
			js_popup.controls.boxHeight = 90;

			
			var html_code = '<img id="' + js_popup.settings.closeIcon.cssID + '" src="' + js_popup.settings.closeIcon.src + '" alt="' + js_popup.settings.closeIcon.alt + '" />';

			
			if(js_popup.preloadImage.width > js_popup.controls.boxWidth || js_popup.preloadImage.height > js_popup.controls.boxHeight)
				{
				js_popup.controls.boxWidth = js_popup.preloadImage.width;
				js_popup.controls.boxHeight = js_popup.preloadImage.height;
				}

			
			if(js_popup.controls.boxWidth > js_popup.controls.boxMaxWidth || js_popup.controls.boxHeight > js_popup.controls.boxMaxHeight)
				{
				html_code += '<img src="';
				html_code += (js_popup.controls.oversize == "resize") ? js_popup.settings.resizeIcon.src_fullSize : js_popup.settings.resizeIcon.src_resize;
				html_code += '" alt="';
				html_code += (js_popup.controls.oversize == "resize") ? js_popup.settings.resizeIcon.alt_fullSize : js_popup.settings.resizeIcon.alt_resize;
				html_code += '" id="' + js_popup.settings.resizeIcon.cssID + '" />';

				
				if(js_popup.controls.oversize == "resize")
					{
					
					var ratio = js_popup.preloadImage.width / js_popup.preloadImage.height;
					var scale = js_popup.preloadImage.width / js_popup.controls.boxMaxWidth;
					if(js_popup.preloadImage.height / scale > js_popup.controls.boxMaxHeight) scale = js_popup.preloadImage.height / js_popup.controls.boxMaxHeight;

					js_popup.controls.boxWidth = Math.ceil(js_popup.preloadImage.width / scale);
					js_popup.controls.boxHeight = Math.ceil(js_popup.preloadImage.height / scale);
					}
				}

			js_popup.functions.center();

			html_code += '<img id="' + js_popup.settings.fullViewImage.cssID + '" alt="' + js_popup.preloadImage.caption + '" />';
			if(js_popup.preloadImage.caption != "") html_code += '<br />' + js_popup.preloadImage.caption;

			js_popup.htmlElements.box.innerHTML = html_code;

			js_popup.htmlElements.fullViewImage = document.getElementById(js_popup.settings.fullViewImage.cssID);
			js_popup.htmlElements.fullViewImage.src = js_popup.preloadImage.src;
			js_popup.htmlElements.fullViewImage.width = js_popup.controls.boxWidth;
			js_popup.htmlElements.fullViewImage.height = js_popup.controls.boxHeight;

			js_popup.htmlElements.box.style.display = "block";

			
			js_popup.htmlElements.resizeIcon = document.getElementById(js_popup.settings.resizeIcon.cssID);
			if (js_popup.htmlElements.resizeIcon)
				{
				js_popup.functions.addEvent("click", js_popup.htmlElements.resizeIcon, js_popup.functions.toggleResize);
				js_popup.functions.addEvent("mouseover", js_popup.htmlElements.resizeIcon,
					function ()
						{ this.style.display = "inline"; } );
				js_popup.htmlElements.resizeIcon.style.display = "none";

				js_popup.functions.addEvent("mouseover", js_popup.htmlElements.fullViewImage,
					function ()
						{ document.getElementById(js_popup.settings.resizeIcon.cssID).style.display = "inline"; } );

				js_popup.functions.addEvent("mouseout", js_popup.htmlElements.fullViewImage,
					function ()
						{ document.getElementById(js_popup.settings.resizeIcon.cssID).style.display = "none"; } );
				}

			return false;
			},


		center : function ()
			{
			
			var x_pos = 0;
			var y_pos = 0;

			
			if(window.innerWidth)
				{
				x_pos = Math.ceil((js_popup.controls.winInnerWidth - js_popup.controls.boxWidth)/2 + window.pageXOffset);
				y_pos = Math.ceil((js_popup.controls.winInnerHeight - js_popup.controls.boxHeight)/2 + window.pageYOffset);
				}
			else
				{
				x_pos = Math.ceil((js_popup.controls.winInnerWidth - js_popup.controls.boxWidth)/2 + js_popup.IE.scrollLeft);
				y_pos = Math.ceil((js_popup.controls.winInnerHeight - js_popup.controls.boxHeight)/2 + js_popup.IE.scrollTop);
				}

			
			x_pos -= 15;
			y_pos -= 15;

			
			if(x_pos < 0) x_pos = 0;
			if(y_pos < 0) y_pos = 0;

			
			js_popup.htmlElements.box.style.left = x_pos + "px";
			js_popup.htmlElements.box.style.top = y_pos + "px";

			return false;
			},




		
		toggleResize : function (e)
			{
			if(!e) e = window.event;
			if(e.stopPropagation) e.stopPropagation();
			e.cancelBubble = true;

			js_popup.controls.oversize = (js_popup.controls.oversize == "resize") ? "fullView" : "resize";
			js_popup.functions.display();

			return false;
			},




		
		hide : function ()
			{
			js_popup.htmlElements.div.style.display = "none";

			return false;
			},




		
		getBrowserDimensions : function ()
			{
			if(window.innerWidth)
				{
				js_popup.controls.winInnerWidth = window.innerWidth;
				js_popup.controls.winInnerHeight = window.innerHeight;
				}
			else
				{
				js_popup.controls.winInnerWidth = js_popup.IE.offsetWidth;
				js_popup.controls.winInnerHeight = js_popup.IE.offsetHeight;
				}

			
			js_popup.controls.boxMaxWidth = js_popup.controls.winInnerWidth - 50;
			js_popup.controls.boxMaxHeight = js_popup.controls.winInnerHeight - 50;

			return false;
			},




		
		addEvent : function (ev, obj, handle)
			{
			if(navigator.userAgent.toLowerCase().lastIndexOf("msie") < 0)
				{
				obj.addEventListener(ev, handle, false);
				obj.addEventListener(ev, handle, false);
				}
			else
				{
				obj.attachEvent("on" + ev, handle);
				obj.attachEvent("on" + ev, handle);
				}
			},




		
		removeEvent : function (ev, obj, handle)
			{
			if(navigator.userAgent.toLowerCase().lastIndexOf("msie") < 0)
				{
				obj.removeEventListener(ev, handle, false);
				obj.removeEventListener(ev, handle, false);
				}
			else
				{
				obj.detachEvent("on" + ev, handle);
				obj.detachEvent("on" + ev, handle);
				}
			},




		
		init : function ()
			{
			
			js_popup.IE = (document.compatMode && document.compatMode == "CSS1Compat") ? document.documentElement : document.body || null;

			
			js_popup.functions.getBrowserDimensions();

			
			js_popup.htmlElements.div = document.getElementById(js_popup.settings.parentDiv.cssID);
			if(!js_popup.htmlElements.div)
				{
				js_popup.htmlElements.div = document.createElement("div");
				js_popup.htmlElements.div.id = js_popup.settings.parentDiv.cssID;
				document.body.appendChild(js_popup.htmlElements.div);

				
				js_popup.htmlElements.div.style.display = "none";
				js_popup.htmlElements.div.style.position = "absolute";
				js_popup.htmlElements.div.style.backgroundImage = "url(" + js_popup.settings.overlayBackground.src_png + ")";

				
				js_popup.htmlElements.box = document.createElement("div");
				js_popup.htmlElements.box.id = js_popup.settings.popupBox.cssID;
				js_popup.htmlElements.box.style.position = "absolute";

				
				js_popup.htmlElements.div.appendChild(js_popup.htmlElements.box);
				js_popup.functions.addEvent("click", js_popup.htmlElements.div, js_popup.functions.hide);
				js_popup.functions.addEvent("click", js_popup.htmlElements.box, js_popup.functions.hide);

				if(typeof(js_popup.htmlElements.div.style.filter) != "undefined")
					{
					// AlpgaImageLoader für echte Transparenz auf das Hintergrundbild des "js-popup"-DIVs anwenden
					js_popup.htmlElements.div.style.backgroundImage = "url(" + js_popup.settings.overlayBackground.src_blank_gif + ")";
					js_popup.htmlElements.div.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="'
																+ js_popup.settings.overlayBackground.src_png + '", sizingMethod="scale")';
					}
				}

			
			if(window.innerWidth && typeof(window.scrollMaxY))
				{
				js_popup.htmlElements.div.style.width = document.body.scrollWidth + "px";
				js_popup.htmlElements.div.style.height = window.innerHeight + window.scrollMaxY + "px";
				}

			if(js_popup.IE.scrollWidth)
				{
				js_popup.htmlElements.div.style.width = js_popup.IE.scrollWidth + "px";
				js_popup.htmlElements.div.style.height = js_popup.IE.scrollHeight + "px";
				}

			
			var allElements = document.getElementsByTagName("*");

			var allGalleries = new Array();
			for (var index_e = 0; index_e < allElements.length; index_e++)
				{
				if(allElements[index_e].className.indexOf(js_popup.settings.triggerCssClass) != -1)
					{
					
					var test = "," + allElements[index_e].className.split(" ").join(",") + ",";
					if(test.indexOf("," + js_popup.settings.triggerCssClass + ",") != -1) allGalleries.push(allElements[index_e]);
					}
				}

			for (var index_g = 0; index_g < allGalleries.length; index_g++)
				{
				
				var allLinks = allGalleries[index_g].getElementsByTagName("a");

				for (var index_a = 0; index_a < allLinks.length; index_a++)
					{
					
					if(allLinks[index_a].getElementsByTagName("img")[0])
						
						allLinks[index_a].onclick = function () { return js_popup.functions.preload(this); };
					}
				}
			}
		}
	}





js_popup.functions.oldOnLoad = window.onload;
js_popup.functions.oldResize = window.onresize;
window.onload = function () { if(js_popup.functions.oldOnLoad) js_popup.functions.oldOnLoad(); js_popup.functions.init(); }
window.onresize = function () { if(js_popup.functions.oldResize) js_popup.functions.oldResize(); js_popup.functions.init(); }