// JScript File
var ScrollTimer = null;

function ScrollDiv(order, content_id, container_id, interval, step) {
	interval = parseInt(interval);
	step = parseInt(step);

	if (!(containerDiv = document.getElementById(container_id))) {
		return;
	}

	if (!(movedDiv = document.getElementById(content_id))) {
		return;
	}

	var top = movedDiv.style.top ? parseInt(movedDiv.style.top) : 0;
	var left = movedDiv.style.left ? parseInt(movedDiv.style.left) : 0;

	var scrollableSpace = containerDiv.offsetHeight - movedDiv.offsetHeight;
	var scrollableHSpace = containerDiv.offsetWidth - movedDiv.offsetWidth;

	//window.status = containerDiv.offsetWidth + ", " + movedDiv.offsetWidth + ", " + left;

	switch (order) {
		case "up":
			if (top > scrollableSpace) {
				movedDiv.style.top = (top - step) + "px";
			}
			break;
		case "down":
			if (top < 0) {
				movedDiv.style.top = (top + step) + "px";
			}
			break;
		case "left":
			if (left > scrollableHSpace) {
				movedDiv.style.left = (left - step) + "px";
			}
			break;
		case "right":
			if (left < 0) {
				movedDiv.style.left = (left + step) + "px";
			}
			break;
		default:
			// Nothing 
			break;
	}

	//window.status = 'containerDiv.offsetWidth: ' + containerDiv.offsetWidth + ', movedDiv.offsetWidth: ' + movedDiv.offsetWidth;

	ScrollTimer = setTimeout("ScrollDiv('" + order + "', '" + content_id + "', '" + container_id + "', '" + interval + "', '" + step + "')", interval);
	//return false; 
}

function StopScrollDiv() {
	clearTimeout(ScrollTimer);
}