window.onload = initImages;
var imgIsLoaded = new Array();
var hImages = new Array('images/portfolio/thetaphouse/1.jpg', 'images/portfolio/stagneshotel/1.jpg', 'images/portfolio/rosieandthegoldbug/1.jpg', 'images/portfolio/enysvilla/1.jpg');
var hPages = new Array('portfolio/the_taphouse.php'         , 'portfolio/st_agnes_hotel.php'       , 'portfolio/rosie_and_the_goldbug.php'      , 'portfolio/enysvilla.php' );
var cLoadImg = -1;
var cImg = 0;

function initImages()
{
    setInterval("swapImage();", 5200);
    preloadImages();
}

function preloadImages()
{
    ++cLoadImg;
    if (cLoadImg > 0)
	{
        imgIsLoaded[cLoadImg-1] = true;
	}
    if (cLoadImg < hImages.length)
        preloadImage(cLoadImg);
}

function preloadImage(i)
{
    var hImg = new Image();
	hImg.onload = preloadImages;
	hImg.src = hImages[i];
}

function swapImage()
{
    if (!imgIsLoaded[cImg]) return;
    var FX = new Fx.Style('homeimg', 'opacity', {duration:500}).start(1,0).addEvent('onComplete', function(){
		    $('homeimg').src = hImages[cImg];
	        }).addEvent('onComplete', function() {
	        $('homelink').href = hPages[cImg];
		    var FX2 = new Fx.Style('homeimg', 'opacity', {duration:500}).start(0,1);
	    });
    cImg++;
    cImg = cImg%4;
}