var slideshow2_noFading = false;	// Just normal show/hide without fading ?
var slideshow2_timeBetweenSlides = 2500;	// Amount of time between each image(1000 = 1 second)
var slideshow2_fadingSpeed = 70;	// Speed of fading
	
/* Don't change any of these values */
var slideshow2_galleryHeigh;	// Height of galery	
var slideshow2_galleryContainer;	// Reference to the gallery div
var slideshow2_galleryWidth;	// Width of gallery	
var slideshow2_slideIndex = -1;	// Index of current image shown
var slideshow2_slideIndexNext = false;	// Index of next image shown
var slideshow2_imageDivs = new Array();	// Array of image divs(Created dynamically)
var slideshow2_currentOpacity = 100;	// Initial opacity
var slideshow2_imagesInGallery = false;	// Number of images in gallery
var currentslideshowelement = '';
var skipped = false;
var firstrun = true;
var pause = false;


function InitGalleryVars() 
{

	/* Don't change any of these values */
	slideshow2_timeBetweenSlides = 3000;
	slideshow2_galleryHeigh;	// Height of galery	
	slideshow2_galleryContainer;	// Reference to the gallery div
	slideshow2_galleryWidth;	// Width of gallery	
	slideshow2_slideIndex = -1;	// Index of current image shown
	slideshow2_slideIndexNext = false;	// Index of next image shown
	slideshow2_imageDivs = new Array();	// Array of image divs(Created dynamically)
	slideshow2_currentOpacity = 100;	// Initial opacity
	slideshow2_imagesInGallery = false;	// Number of images in gallery
	skipped = false;
	firstrun = true;
	pause = false;
	
}
	
function getGalleryImageSize(imageIndex, slideshowelement)
{	
	if (document.getElementById(slideshowelement) != null) {
		if(imageIndex>slideshow2_imagesInGallery){		
			imageIndex = 1;
		}
			if(imageIndex==slideshow2_imagesInGallery){			
			showGallery(slideshowelement);
		}else{
			var imgObj = document.getElementById('galleryImage' + imageIndex);
			var imgWidth = imgObj.width;
			var imgHeight = imgObj.height;
			if(imgWidth>50){						
				var tmpDiv = document.createElement('DIV');
				tmpDiv.id = 'galleryDiv' + imageIndex;
				tmpDiv.style.visibility = 'hidden';
				tmpDiv.className='imageInGallery';
				slideshow2_galleryContainer.appendChild(tmpDiv);
				tmpDiv.appendChild(imgObj);
				imgObj.style.left = Math.round((slideshow2_galleryWidth - imgWidth)/2)  + "px";
				imgObj.style.top = Math.round((slideshow2_galleryHeight - imgHeight)/2)  + "px";
				tmpDiv.style.visibility = 'hidden';
				slideshow2_imageDivs.push(tmpDiv);
				imageIndex++;
				getGalleryImageSize(imageIndex, slideshowelement);
			}else{
				setTimeout('getGalleryImageSize(' + imageIndex + ', ' + slideshowelement + ')',10);
			}
		}
	} 
}

function showGallery(slideshowelement)
{
	if (document.getElementById(slideshowelement) != null) {
		
		if (!skipped) {
			SlideShowIndex('up');	
		}
		
		show_nav();
		
		slideshow2_currentOpacity=100;	
		
		if (slideshow2_imageDivs[slideshow2_slideIndex]) {
	
			slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'visible';
			if(navigator.userAgent.indexOf('Opera')<0){
				slideshow2_imageDivs[slideshow2_slideIndexNext].style.visibility = 'visible';
			}
	
			if(document.all){	// IE rules
				slideshow2_imageDivs[slideshow2_slideIndex].style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=100, Style=0)';
				slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=1, Style=0)';
			}else{
				slideshow2_imageDivs[slideshow2_slideIndex].style.opacity = 0.99;	// Can't use 1 and 0 because of screen flickering in FF
				slideshow2_imageDivs[slideshow2_slideIndexNext].style.opacity = 0.01;
			}	
		}
		
		if (!skipped) {
			setTimeout('revealImage(\'' + slideshowelement + '\')',slideshow2_timeBetweenSlides);	
		} else {
			skipped = false;
		}
	} 
}

function SlideShowIndex(mode) 
{
	if (mode == 'up') {
		if(slideshow2_slideIndex<=-1)
		{
			slideshow2_slideIndex=1;
		} else {
			slideshow2_slideIndex++;
		}
		
		if(slideshow2_slideIndex>=slideshow2_imageDivs.length)
		{
			slideshow2_slideIndex=1;
		}
	
		
	} else {
		if(slideshow2_slideIndex<=-1)
		{
			slideshow2_slideIndex=1;
		} else {
			slideshow2_slideIndex--;
		}
		
		if(slideshow2_slideIndex<1)
		{
			slideshow2_slideIndex=slideshow2_imageDivs.length-1;
			
		}
	}
	
	if (firstrun)
	{
		slideshow2_slideIndex = 0;
		firstrun = false;
	}
		
	slideshow2_slideIndexNext = slideshow2_slideIndex+1;
	
	if(slideshow2_slideIndexNext>=slideshow2_imageDivs.length)
	{
		slideshow2_slideIndexNext = 1;
	}
}
function revealImage(slideshowelement)
{
	if (document.getElementById(slideshowelement) != null) {
		
		//show_nav();
		
		if (!pause) 
		{
		
			if (slideshow2_imageDivs[slideshow2_slideIndex]) {
				if(slideshow2_noFading){
					slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';
					showGallery(slideshowelement);
					return;
				}
				slideshow2_currentOpacity = slideshow2_currentOpacity -4
				 if(document.all){
					slideshow2_imageDivs[slideshow2_slideIndex].style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+slideshow2_currentOpacity+', Style=0)';
					slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity='+(100-slideshow2_currentOpacity)+', Style=0)';
				 }else{
					slideshow2_imageDivs[slideshow2_slideIndex].style.opacity = Math.max(0.01,slideshow2_currentOpacity/100);	// Can't use 1 and 0 because of screen flickering in FF
					slideshow2_imageDivs[slideshow2_slideIndexNext].style.opacity = Math.min(0.99,(1 - (slideshow2_currentOpacity/100)));
				 }
				if(slideshow2_currentOpacity>1){
					setTimeout('revealImage(\'' + slideshowelement + '\')',slideshow2_fadingSpeed);
				}else{
					slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';			
					showGallery(slideshowelement);
				}
			} else {
				showGallery(slideshowelement);
			}
		} else {
			setTimeout('revealImage(\'' + slideshowelement + '\')',slideshow2_fadingSpeed);
		}
	} 
}

function initImageGallery(gallery_id, timeBetweenSlides, fadingSpeed)
{
	
	/*alert(timeBetweenSlides+':'+fadingSpeed);*/
	var slideshowelement = 'gallery_' + gallery_id;
	
	currentslideshowelement = slideshowelement;
	
	if (document.getElementById(slideshowelement) != null) {
		InitGalleryVars();
		slideshow2_timeBetweenSlides = timeBetweenSlides;
		slideshow2_fadingSpeed = fadingSpeed;
		slideshow2_galleryContainer = document.getElementById(slideshowelement);
		slideshow2_galleryWidth = slideshow2_galleryContainer.clientWidth;
		slideshow2_galleryHeight = slideshow2_galleryContainer.clientHeight;
		galleryImgArray = slideshow2_galleryContainer.getElementsByTagName('IMG');
		for(var no=0;no<galleryImgArray.length;no++){
			galleryImgArray[no].id = 'galleryImage' + no;
		}
		slideshow2_imagesInGallery = galleryImgArray.length;
		getGalleryImageSize(0, slideshowelement);	
	}	
}

function show_nav() {
	if (document.getElementById("SlideShowNav") != null) {	
		
		if (!pause) {
			document.getElementById("SlideShowNav").innerHTML = '<a href="#" onclick="SlidePause(); return false;"><img src=\"images/navnumbers/nv_pause.gif\" /></a>&nbsp;';
		} else {
			document.getElementById("SlideShowNav").innerHTML = '<a href="#" onclick="SlidePlay(); return false;"><img src=\"images/navnumbers/nv_play.gif\" /></a>&nbsp;';
		}
			
		document.getElementById("SlideShowNav").innerHTML += Numbers2str(slideshow2_slideIndexNext)+'<img src=\"images/navnumbers/nv_bar.gif\" />'+(Numbers2str(slideshow2_imagesInGallery-1))+'&nbsp;<a href="#" onclick="SlidePrev(); return false;"><img src=\"images/navnumbers/nv_learr.gif\" /></a><a href="#" onclick="SlideNext(); return false;"><img src=\"images/navnumbers/nv_riarr.gif\" /></a>';
	}
}

function Numbers2str(number) {
	
	strnumber = new String(number);
	strnumber = strnumber.replace(/0/g, "<img src=\"images/navnumbers/nv_0.gif\" />");
	strnumber = strnumber.replace(/1/g, "<img src=\"images/navnumbers/nv_1.gif\" />");
	strnumber = strnumber.replace(/2/g, "<img src=\"images/navnumbers/nv_2.gif\" />");
	strnumber = strnumber.replace(/3/g, "<img src=\"images/navnumbers/nv_3.gif\" />");
	strnumber = strnumber.replace(/4/g, "<img src=\"images/navnumbers/nv_4.gif\" />");
	strnumber = strnumber.replace(/5/g, "<img src=\"images/navnumbers/nv_5.gif\" />");
	strnumber = strnumber.replace(/6/g, "<img src=\"images/navnumbers/nv_6.gif\" />");
	strnumber = strnumber.replace(/7/g, "<img src=\"images/navnumbers/nv_7.gif\" />");
	strnumber = strnumber.replace(/8/g, "<img src=\"images/navnumbers/nv_8.gif\" />");
	strnumber = strnumber.replace(/9/g, "<img src=\"images/navnumbers/nv_9.gif\" />");
	
	return strnumber;
}

function SlideNext()
{
	if (!skipped) 
	{
		pause = true;
		skipped = true;
		if (slideshow2_imageDivs[slideshow2_slideIndex]) {
				slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';
		}
		if (slideshow2_imageDivs[slideshow2_slideIndexNext]) {
				slideshow2_imageDivs[slideshow2_slideIndexNext].style.visibility = 'hidden';
		}
		SlideShowIndex('up');
		showGallery(currentslideshowelement);
	}
}

function SlidePrev() 
{
	if (!skipped) 
	{
		pause = true;
		skipped = true;
		if (slideshow2_imageDivs[slideshow2_slideIndex]) {
				slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';
		}
		if (slideshow2_imageDivs[slideshow2_slideIndexNext]) {
				slideshow2_imageDivs[slideshow2_slideIndexNext].style.visibility = 'hidden';
		}
		SlideShowIndex('down');
		showGallery(currentslideshowelement);
	}
}

function SlidePause() {
	pause = true;
	show_nav();
}

function SlidePlay() {
	pause = false;
	show_nav();
}


function KeyPressed(e) 
{
	if (!e)
	{
		e = window.event
	}
	var key = e.keyCode || e.which;
	if ((key == 39) || (key == 38))
	{
		SlideNext();
	}
	
	if ((key == 37) || (key == 40))
	{
		SlidePrev();
	}
}

document.onkeyup = KeyPressed;