Mine

function scrubit() {
	scrubberPercentage = (scrubber.button._x / (Stage.width-scrubber.button._width)) * 100;
	scrubberPercentage = Math.round(scrubberPercentage);
	moveRatio = Stage.width - contentHolder._width - 50;
	
	contentHolder._x = moveRatio / 100 * scrubberPercentage;
}