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 + ")"; 

	pause(1);

	//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++; 
	}
}

function blendinout(imageid, millisec, inorout)
{

	var speed = Math.round(millisec / 10);
	var timer = 0;	


	if (inorout == "0") {

	for(i = 0; i <= 100; i++) 
	{ 
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed)); 
		timer++; 
	} 

	} else {

	for(i = 100; i >= 0; 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,300); 

	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); 

}

function pause(numSeconds)
// Assumes: numSeconds >= 0
// Results: pauses execution for numSeconds seconds
{
    var now, goalTime;

    now = new Date();
    goalTime = now.getTime() + 1000*numSeconds;

    while (now.getTime() < goalTime) {
        now = new Date();
    }
}