$(document).ready(function(){

	var upArrowEnabled				= '/images/dark-up-arrow.png';
	var downArrowEnabled			= '/images/dark-down-arrow.png';
	var upArrowDisabled				= '/images/grey-up-arrow.png';
	var downArrowDisabled			= '/images/grey-down-arrow.png';
	var initialContentHeight	= $(".vertical").height();

	if(parseInt(initialContentHeight) > 150) {
		$("a.next img").attr("src", downArrowEnabled);
	} else {
		$("a.next img").attr("src", downArrowDisabled);
	}

	$("a.next").bind("click", function(){
		var topVal				= $(this).parents(".content").find(".vertical").css("top");
		var contentHeight	= $(this).parents(".content").find(".vertical").height();
		var viewWindow		= $(".cottageLocations").height();
		if(parseInt(topVal)-parseInt(viewWindow) < -contentHeight) {
			$("a.next img").attr("src", downArrowDisabled);
			return;
		} else {
			$(this).parents(".content").find(".vertical").css("top", topVal).animate({top: '-=150'}, 500);
			$("a.prev img").attr("src", upArrowEnabled);
		}
	});

	$("a.prev").bind("click", function(){
		var topVal				= $(this).parents(".content").find(".vertical").css("top");
		var contentHeight	= $(this).parents(".content").find(".vertical").height();
		if (parseInt(topVal) >= 0) {
			$("a.prev img").attr("src", upArrowDisabled);
			$("a.next img").attr("src", downArrowEnabled);
			return;
		} else if (parseInt(topVal) >= -contentHeight) {
			$(this).parents(".content").find(".vertical").css("top", topVal).animate({top: '+=150'}, 500);
			$("a.next img").attr("src", downArrowEnabled);
		}
	});

});