var imgdelay = 5000;
var fadetime = 1000;
var loaddelay = 800;
var imgdir = 'images/';
var imgprefix = imgdir + 'header-image-';
var imgsuffix = '.jpg';
var currdiv = 2;
var currimg = 1;
var minimg = 1;
var maximg = 22;
var imgpreload = new Image();
var nextImgSrc = "";

function zeroPad(num,count)
{
	var numZeropad = num + '';
	while(numZeropad.length < count) {
		numZeropad = "0" + numZeropad;
	}
	return numZeropad;
}

function nextSrc() {

        if (currimg == maximg) {
                currimg = minimg;
        } else {
                currimg++;
        }

        return imgprefix + zeroPad(currimg, 2) + imgsuffix;
}
nextImgSrc = nextSrc();
imgpreload.src = nextImgSrc;

$(document).everyTime(imgdelay, function(){
	switch (currdiv) {
			case 1:
				$("#img02").attr("src", nextImgSrc);
				$(document).oneTime(loaddelay, function() {
        	                        $("#header-img-fade1").fadeOut(fadetime);
	                                $("#header-img-fade2").fadeIn(fadetime);
				});
				currdiv = 2;
				
			break;
			case 2:
               $("#img01").attr("src", nextImgSrc);
               $(document).oneTime(loaddelay, function() {
                                        $("#header-img-fade1").fadeIn(fadetime);
                                        $("#header-img-fade2").fadeOut(fadetime);
                });
				currdiv = 1;
			break;
	}
	nextImgSrc = nextSrc();
	imgpreload.src = nextImgSrc;
});