var DURATION = 500;  /* Number of milliseconds taken for transition */
var DISTANCE = 80;

function slideLeft(distance) {	
	$("#thumbnailsSlider").slide("LEFT", (distance > 0)? distance : DISTANCE, DURATION);	
}

function slideRight(distance) {			
	$("#thumbnailsSlider").slide("RIGHT", (distance > 0)? distance : DISTANCE, DURATION);	
}

function scrollUp(distance) {			
	$("#thumbnailsSlider").slide("UP", (distance > 0)? distance : DISTANCE, DURATION);	
}

function scrollDown(distance) {			
	$("#thumbnailsSlider").slide("DOWN", (distance > 0)? distance : DISTANCE, DURATION);	
}