var slideNo, slideName, slideInterval = 5000, slideCount = 42;

function startSlideShow(){
	idMoveSlide = window.setInterval('nextSlide()',slideInterval);
}

function nextSlide(){
	slideNo = Math.floor(slideCount * Math.random()) + 1;
	slideName = new String(slideNo);
	if (slideName.length == 1) slideName = '0' + slideName;
	if (slideName.length == 2) slideName = '0' + slideName;
	slideName = slideName + '.jpg';
	document.slideImg.src = '/slideshows/primary/' + slideName;
}

if (document.slideImg.src.length == 0) nextSlide()

startSlideShow();