// Browser Slide-Show script. With image cross fade effect for those browsers
// that support it.
// Script copyright (C) 2004-2008 www.cryer.co.uk.
// Script is free to use provided this copyright header is included.
// Script edited to support links by Lars Nyström.
var FadeDurationMS=1000;
function SetOpacity(object,opacityPct) {
	object.style.filter = 'alpha(opacity=' + opacityPct + ')';
	object.style.MozOpacity = opacityPct/100;
	object.style.opacity = opacityPct/100;
}
function ChangeOpacity(id,msDuration,msStart,fromO,toO) {
	var element=document.getElementById(id);
	var msNow = (new Date()).getTime();
	var opacity = fromO + (toO - fromO) * (msNow - msStart) / msDuration;
	if (opacity>=100) {
		SetOpacity(element,100);
		element.timer = undefined;
	} else if (opacity<=0) {
		SetOpacity(element,0);
		element.timer = undefined;
	} else {
		SetOpacity(element,opacity);
		element.timer = window.setTimeout("ChangeOpacity('" + id + "'," + msDuration + "," + msStart + "," + fromO + "," + toO + ")",10);
	}
}
function FadeInImage(foregroundID,newImage,newLink,backgroundID) {
	var foreground=document.getElementById(foregroundID);
	if (foreground.timer) window.clearTimeout(foreground.timer);
	if (backgroundID) {
		var background=document.getElementById(backgroundID);
		if (background) {
			if (background.src) {
				foreground.src = background.src;
				SetOpacity(foreground,100);
			}
			foreground.parentNode.href = newLink;
			background.src = newImage;
			background.style.backgroundImage = 'url(' + newImage + ')';
			background.style.backgroundRepeat = 'no-repeat';
			var startMS = (new Date()).getTime();
			foreground.timer = window.setTimeout("ChangeOpacity('" + foregroundID + "'," + FadeDurationMS + "," + startMS + ",100,0)",10);
		}
	} else {
		foreground.src = newImage;
	}
}
var slideCache = new Array();
function RunSlideShow(pictureID,backgroundID,imageFiles,imageLinks,displaySecs) {
	var imageSeparator = imageFiles.indexOf(";");
	var nextImage = imageFiles.substring(0,imageSeparator);
  
	var linkSeparator = imageLinks.indexOf(";");
	var nextLink = imageLinks.substring(0, linkSeparator);
  
	if (slideCache[nextImage] && slideCache[nextImage].loaded) {
		FadeInImage(pictureID,nextImage,nextLink,backgroundID);
		var futureImages = imageFiles.substring(imageSeparator+1,imageFiles.length)
		+ ';' + nextImage;
	
		var futureLinks = imageLinks.substring(linkSeparator+1,imageLinks.length)
		+ ';' + nextLink;
	  
		setTimeout("RunSlideShow('"+pictureID+"','"+backgroundID+"','"+futureImages+"','"+futureLinks+"',"+displaySecs+")",
		displaySecs*1000);
		imageSeparator = futureImages.indexOf(";");
		nextImage = futureImages.substring(0,imageSeparator);
		linkSeparator = futureLinks.indexOf(";");
		nextLink = futureLinks.substring(0,linkSeparator);
	} else {
		setTimeout("RunSlideShow('"+pictureID+"','"+backgroundID+"','"+imageFiles+"','"+imageLinks+"',"+displaySecs+")",
		250);
	}
	if (slideCache[nextImage] == null) {
		slideCache[nextImage] = new Image;
		slideCache[nextImage].loaded = false;
		slideCache[nextImage].onload = function(){this.loaded=true};
		slideCache[nextImage].src = nextImage;
	}
}