scroller.custom_init = function() {
//alert("custom_init " + scroller.needScroller);
	if (!scroller.needScroller) {
		$I('scrollArea').style.visibility = 'hidden';
		$I('scrollButtons').style.visibility = 'hidden';
		$I('scrollContent').style.position = 'absolute';
		$I('scrollContent').style.bottom = '0px';
	} else {
		$I('scrollArea').style.visibility = 'visible';
		$I('scrollButtons').style.visibility = 'visible';
	}
}

/* how fast are we scrolling on mousedown */
scrollAmount = 4;