//var afbeelding = new Array();
//afbeelding[0] = 'afbeelding/gd (3).jpg'
//afbeelding[1] = 'afbeelding/gd (2).jpg'
//afbeelding[2] = 'afbeelding/2003bzf011s.jpg'
//afbeelding[3] = 'afbeelding/gd (4).jpg'
//afbeelding[4] = 'afbeelding/2004bzf008.jpg'

var Caption = new Array(); // don't change this
Caption[0]  = "This is the first caption.";
Caption[1]  = "This is the second caption.";
Caption[2]  = "This is the third caption.";
Caption[3]  = "This is the fourth caption.";
Caption[4]  = "This is the fifth caption.";

var blendid = 0
var iss;
var pss = afbeelding.length-1;
var preLoad = new Array();
var prld = new Image();
for (iss = 0; iss < pss+1; iss++){
preLoad[iss] = new Image();
preLoad[iss].src = afbeelding[iss];
prld.src = afbeelding[iss];}


function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
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 shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
//	document.getElementById(divid).style.backgroundImage = "url('" + document.getElementById(imageid).src + "')";
	changeOpac(50, divid);
	changeOpac(0, divid);
	document.getElementById(imageid).style.zIndex = "3";
	document.getElementById(divid).style.zIndex = "2";
//	document.getElementById(divid).src = document.getElementById(imageid).src;
	changeOpac(100, divid);
	//make image transparent
	changeOpac(50, imageid);
	changeOpac(0, imageid);

	//make new image
	document.getElementById(imageid).src = imagefile;
//	document.getElementById(imageid).src = document.getElementById(divid).src;

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

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}

function fotoboek() {
	document.getElementById('blendimage').src = afbeelding[1];
	document.getElementById('blendimage2').src = afbeelding[0];


	setTimeout('blend("blendimage", "blendimage2")', 5000);
//	document.getElementById('textdiv').innerHTML = Caption[blendid];
}

function blend(img1, img2) {
 	blendid++
	if (!afbeelding[blendid]) {
		blendid=0;	
	}
	blendimage(img1, img2, afbeelding[blendid], 1500);
	setTimeout('blend("'+img2+'", "'+img1+'")', 5000);
//	document.getElementById('textdiv').innerHTML = Caption[blendid];
}