$(document).ready(function(){
	$(".tipsy").tooltipsy({
		offset: [0, -10]
	});
});

var currentMargin = 	new Array(0,0);
var scrollEnabled = 	new Array(true, true);
var ids = 			new Array('book-slider', 'book-slider2');
var itemBoxHeight = 	126;


function autoScrollItems(id) {
	if(!scrollEnabled) return false;
	
	currentMargin[id] += 2*itemBoxHeight;
	if(currentMargin[id] > ((nItems[id]-2)*itemBoxHeight)) {
		currentMargin[id] = 0;
	}
	slideTo(id);
}
function slideUp(id) {
	currentMargin[id] -= 2*itemBoxHeight;
	slideTo(id);
}
function slideDown(id) {
	currentMargin[id] += 2*itemBoxHeight;
	slideTo(id);
}
function slideTo(id) {
	if(currentMargin[id] > ((nItems[id]-2)*itemBoxHeight)) {
		currentMargin[id] = (nItems[id]-2)*itemBoxHeight;
		tickDown(id);
		return false;
	}
	if(currentMargin[id] < 0) {
		currentMargin[id] = 0;
		tickUp(id);
		return false;
	}
	$("#"+ids[id]).stop().animate({"marginTop":"-"+currentMargin[id]+"px"}, 1000);
}
function tickUp(id) {
	var tempMargin = currentMargin[id] + 10;
	$("#"+ids[id]).stop().animate({"marginTop":tempMargin+"px"}, 400).animate({"marginTop":"-"+currentMargin[id]+"px"}, 400);
}
function tickDown(id){
	var tempMargin = currentMargin[id] + 10;
	$("#"+ids[id]).stop().animate({"marginTop":"-"+tempMargin+"px"}, 400).animate({"marginTop":"-"+currentMargin[id]+"px"}, 400);
}