var SLIDE_TIME = 10000;

var NMBR_OF_PICS = 1;

var headimages = new Array(NMBR_OF_PICS);

function fade(step) {
	
	var myTimeout;
	
	var img1 = document.getElementById("slideimg1");
	var img2 = document.getElementById("slideimg2");

	step = step || 0;
	
	img2.style.opacity = step/100;
	img2.style.filter = "alpha(opacity=" + step + ")";
	
	step = step + 2;

	if (step <= 100) {
		myTimeout = setTimeout(function () { fade(step); }, 30);
	} else {
		myTimeout = setTimeout(function () { slideHeadImg(); }, SLIDE_TIME);
	}
}

function slideHeadImg() {

	var img1 = document.getElementById("slideimg1");
	var img2 = document.getElementById("slideimg2");
	
	var src = img2.src;
	img1.src = src;
	img2.style.opacity = 0;
	img2.style.filter = "alpha(opacity=0)";
	
	var rnd = Math.floor(Math.random()*NMBR_OF_PICS) + 1;

	img2.src = "styles/common/headerimg/"+rnd+".jpg";
	
	fade(0);
};

function startSlide(nmbr) {

	NMBR_OF_PICS = nmbr;
	
	for (var i=0; i<=NMBR_OF_PICS; i++) {
		var pic = i+1;
		headimages[i] = new Image(860, 150);
		headimages[i].src = "styles/common/headerimg/"+pic+".jpg";			
	}

	var myTimeout = setTimeout(function () { slideHeadImg(); }, SLIDE_TIME);
}