var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		left_arrow_over = newImage("images/left_arrow_over.gif");
		right_arrow_over = newImage("images/right_arrow_over.gif");
		copyright_over = newImage("images/copyright_over.gif");
		preloadFlag = true;
	}
}

var thumbstripPosition = 0;
function genThumbArrows (slideValue) {
	thumbstripPosition = thumbstripPosition + slideValue;
	thumbstripObject = MM_findObj ('thumbstrip');
	//window.status = parseInt(thumbstripObject.style.width) + thumbstripPosition;
	if (thumbstripPosition < 0) {
		document.left_arrow.height = 12;
		document.left_arrow.width = 120;
	} else {
		document.left_arrow.height = 0;
		document.left_arrow.width = 0;
	}
	if (parseInt(thumbstripObject.style.width) + thumbstripPosition > 760) {
		document.right_arrow.height = 12;
		document.right_arrow.width = 120;
	} else {
		document.right_arrow.height = 0;
		document.right_arrow.width = 0;
	}
}