/************************************************************************************************************
(C) www.dhtmlgoodies.com, October 2005

This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission. 

Thank you!

www.dhtmlgoodies.com
Alf Magne Kalleland

************************************************************************************************************/	


function getGalleryImageSize(imageIndex)
{
	if(imageIndex==slideshow2_imagesInGallery){			
		showGallery();
	}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";
			slideshow2_imageDivs.push(tmpDiv);
			tmpDiv.style.visibility = 'hidden';
			imageIndex++;
			getGalleryImageSize(imageIndex);
		}else{
			setTimeout('getGalleryImageSize(' + imageIndex + ')',10);
		}
	}		
}

function showGallery()
{
	if(slideshow2_slideIndex==-1)slideshow2_slideIndex=0; else slideshow2_slideIndex++;	// Index of next image to show
	if(slideshow2_slideIndex==slideshow2_imageDivs.length)slideshow2_slideIndex=0;
	slideshow2_slideIndexNext = slideshow2_slideIndex+1;	// Index of the next next image
	if(slideshow2_slideIndexNext==slideshow2_imageDivs.length)slideshow2_slideIndexNext = 0;
	
	slideshow2_currentOpacity=100;	// Reset current opacity

	// Displaying image divs
	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 = 'alpha(opacity=100)';
		slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'alpha(opacity=1)';
	}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;
	}		
	

	setTimeout('revealImage()',slideshow2_timeBetweenSlides);		
}

function revealImage()
{
	if(slideshow2_noFading){
		slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';
		showGallery();
		return;
	}
	slideshow2_currentOpacity--;
	if(document.all){
		slideshow2_imageDivs[slideshow2_slideIndex].style.filter = 'alpha(opacity='+slideshow2_currentOpacity+')';
		slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'alpha(opacity='+(100-slideshow2_currentOpacity)+')';
	}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>0){
		setTimeout('revealImage()',slideshow2_fadingSpeed);
	}else{
		slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';			
		showGallery();
	}
}

function initImageGallery()
{
	slideshow2_galleryContainer = document.getElementById('imageSlideshowHolder');
	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);		
	
}