/*
* Author:      Marco Kuiper (http://www.marcofolio.net/)
*/

// Speed of the automatic slideshow


function bgSlideshow(){
//	alert("start");
//$(document).ready(function() {
		
	// Backwards navigation
	$("#back").click(function() {
		stopAnimation();
		navigate("back");
	});
	
	// Forward navigation
	$("#next").click(function() {
		stopAnimation();
		navigate("next");
	});
	
	var interval;
	
	$("#control").toggle(function(){
		stopAnimation();
	}, function() {
		// Change the background image to "pause"
//		$(this).css({ "background-image" : "url(images/btn_pause.png)" });
		
		// Show the next image
		navigate("next");
		
		// Start playing the animation
		interval = setInterval(function() {
			navigate("next");
		}, slideshowSpeed);
	});
	
	
	var activeContainer = 1;	
	var currentImg = 0;
	var animating = false;
	var navigate = function(direction) {
		// Check if no animation is running. If it is, prevent the action
		if(animating) {
			return;
		}
		
		// Check which current image we need to show
		if(direction == "next") {
			currentImg++;
			if(currentImg == photos.length + 1) {
				currentImg = 1;
			}
		} else {
			currentImg--;
			if(currentImg == 0) {
				currentImg = photos.length;
			}
		}
		
		// Check which container we need to use
		var currentContainer = activeContainer;
		if(activeContainer == 1) {
			activeContainer = 2;
		} else {
			activeContainer = 1;
		}
		
		showImage(photos[currentImg - 1], currentContainer, activeContainer);
		
	};
	
	var currentZindex = 801;
	var showImage = function(photoObject, currentContainer, activeContainer) {
		animating = true;
		
		// Make sure the new container is always on the background
		currentZindex--;
		
		// Set the background image of the new active container
		$("#headerimg" + activeContainer).css({
			"background" : "url(" + photoObject.image + ") center center no-repeat",
			"display" : "block",
			"position": "absolute",
/*			"-moz-border-radius": "32px",
		    "-webkit-border-radius": "32px",
		    "-khtml-border-radius": "32px", */
			"z-index" : currentZindex
			
		});

//		$("#headerimg" + activeContainer).corner("32px");
//		$("#bg_slider").corner("32px");				
//		alert(currentZindex);

/*
		// Hide the header text
		$("#headertxt").css({"display" : "none"});
		
		// Set the new header text
		$("#pictureduri")
			.attr("href", photoObject.url)
			.html(photoObject.title);
		
*/	
//		$("#firstline").html(photoObject.firstline);
		var progress = 0, progress_b = 0;
		
		var timer = setInterval(function() {
                $("#firstline").text(photoObject.firstline.substring(0, progress++));
                if (progress > photoObject.firstline.length) { 
					clearInterval(timer);
					var timer2 = setInterval(function() {
							$("#secondline").text(photoObject.secondline.substring(0, progress_b++));
							if (progress_b > photoObject.secondline.length) { 
								clearInterval(timer2);
							}
					}, 10);

				}
        }, 50);
		
	/*	$("#secondline")
			.attr("href", photoObject.url)
			.html(photoObject.secondline);
	*/
		// Fade out the current container
		// and display the header text when animation is complete
		$("#headerimg" + currentContainer).fadeOut(function() {
			setTimeout(function() {

				animating = false;
			}, 1000);
		});

	};
	
	var stopAnimation = function() {
		// Change the background image to "play"
//		$("#control").css({ "background-image" : "url(images/btn_play.png)" });		
		// Clear the interval
		clearInterval(interval);
	};
	
	navigate("next");
	
	// Start playing the animation
	interval = setInterval(function() {
		navigate("next");
	}, slideshowSpeed);

	
};