function changeOpac(opacity, id) {
	var object = document.getElementById(id).style;
	if (opacity == 100) {
		object.opacity = 0;
		object.MozOpacity = 0;
		object.KhtmlOpacity = 0;
		object.filter = "alpha(opacity=0)";
		document.getElementById('divid').style.backgroundImage = "url(" + document.getElementById('imageid').src + ")";
	}
	else {
		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;

	//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);
	blendimage(divid,imageid,nextImage,100);
	var futureImages= imageFiles.substring(imageSeparator+1,imageFiles.length)+ ';' + nextImage;
	setTimeout("RunSlideShow('"+divid+"','"+imageid+"','"+futureImages+"',"+displaySecs+")",displaySecs*1000);

	// 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;
	}
}