function changeOpac(opacity, id) {
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 10);
	var timer = 0;
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	//make image transparent
	changeOpac(0, imageid);
	//make new image
	document.getElementById(imageid).src = imagefile;
	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}


var slideCache = new Array();
function RunSlideShow(divid,imageid,imageFiles,displaySecs) {
	var imageSeparator = imageFiles.indexOf(";");
	var nextImage = imageFiles.substring(0,imageSeparator);
	
	changeOpac(0, imageid);
	blendimage(divid,imageid,nextImage,100);
	
	var futureImages= imageFiles.substring(imageSeparator+1,imageFiles.length)+ ';' + nextImage;
	setTimeout("RunSlideShow('"+divid+"','"+imageid+"','"+futureImages+"',"+displaySecs+")",displaySecs*2000);
	
	// Cache the next image to improve performance.
	imageSeparator = futureImages.indexOf(";");
	nextImage = futureImages.substring(0,imageSeparator);
	if (slideCache[nextImage] == null) {
		slideCache[nextImage] = new Image;
		slideCache[nextImage].src = nextImage;
	}
}