var picQuantity = 8;
var picCounter = 0;
var goingUp = true;
var homepicObj;

function goHome() {
	//preload pics into cache
	for (var i = 0; i < picQuantity; i++) {
		var picObj = new Image(730,220);
		picObj.src = "pics/pic" + i + ".jpg";
	}
	homepicObj = document.getElementById("homepic");
	showPics();
}

function showPics() {
	//flip through pictures once
	if (picCounter == picQuantity-1) {
		goingUp = false;
	}
	homepicObj.src = "pics/pic" + picCounter + ".jpg";
	var picTimer = setTimeout("showPics()",1200);
	if (picCounter < picQuantity && goingUp) {
		picCounter += 1;
	}
	else if (picCounter > /*0*/6) {
		picCounter -= 1;
	}
	else {
		clearTimeout(picTimer);
		// homepicObj.src = "pics/pic0.jpg";
	}
}