$(document).ready(function(){
	var maskWidth = 319;
	var nbPosition = $('.excursions_mask ul').children().length - 2;
	var currentPosition = 1;
	
	$('#slideshow-slideleft').click(function(){			// LEFT ARROW
		currentPosition--;
		slideToPosition(currentPosition);
		return false;
	});
	$('#slideshow-slideright').click(function(){			// RIGHT ARROW
		currentPosition++;
		slideToPosition(currentPosition);
		return false;
	});
	
	/**
		Slideshow animation
	*/
	var slideToPosition = function(position){
		// If it goes to far
		if (position > nbPosition){
			position = 1;
			currentPosition = 1;
		}
		//If it goes to before
		if (position < 1){
			position = nbPosition;
			currentPosition = nbPosition;
		}
		
		value = (position - 1) * -maskWidth;
		
		$('.excursions_mask ul').animate({marginLeft: value},300 , 'easeOutCubic' );
		
	}
});