// JScript source code

var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var IE4 = (bName == "Microsoft Internet Explorer" && bVer < 4);
var agt=navigator.userAgent.toLowerCase();
 
mac    = (agt.indexOf("mac")!=-1);
ie4mac = (IE4 && (mac));

var picturePath = "foto/";
var pictures = new Array();
pictures[0] = new Image();
pictures[1] = new Image();
pictures[2] = new Image();
pictures[0].src = "foto/forside_1.jpg";
pictures[1].src = "foto/forside_2.jpg";
pictures[2].src = "foto/forside_3.jpg";

var activePicture = 0;
var opacityStart = 100;
var opacityEnd = 0;
function imageFade() {
	if (!mac) {
		opacityStart = opacityStart - 10;
		document.getElementById("forsidebillede").style.filter = "Alpha(Opacity="+ opacityStart +")";	
		if (opacityStart >= opacityEnd) {
			setTimeout("imageFade()",30);
		}	else {
			opacityStart = 0;
			imageChange();
		}
	} else {
		imageChange();
	}
	
	
}
function imageFadeIn() {
	if (!mac) {
		opacityStart = opacityStart + 10;
		document.getElementById("forsidebillede").style.filter = "Alpha(Opacity="+ opacityStart +")";	
		if (opacityStart <= 100) {
			setTimeout("imageFadeIn()",30);
		}	else {
			opacityStart = 100;
			setTimeout("imageFade()",7000);
		}
	} else {
		setTimeout("imageFade()",7000);
	}
	
}
function imageChange() {
	
	switch (activePicture) {
		case 2:
			document.forsidebillede.src = pictures[0].src;
			activePicture = 0;
			break;
		
		case 1:
			document.forsidebillede.src = pictures[2].src;
			activePicture = 2;
			break;
		
		case 0:
			document.forsidebillede.src = pictures[1].src;
			activePicture = 1;
			break;		
	}	
	imageFadeIn();
	
	
}
function startImageRotation() {
	setTimeout("imageFade()",3500);
}