function scrollable (div) {
	var heightLi = 69;
	var sizeLi = $(div).find("li").size();
	var spost = 1;
	
	$(div).find("ul").css("height", (heightLi*sizeLi)+"px");
	
	$(div).find("a.nextPage").click(function(){
		var ulTop = parseInt($(div).find("ul").css("top"));
		var maxSpost = parseInt($(div).find("ul").css("height")) - (heightLi*3);
		if (ulTop != -maxSpost) {
			$(div).find("ul").animate({top: ulTop - (heightLi * spost) + "px"});
		}
		return false;
	});
	
	$(div).find("a.prevPage").click(function(){
		var ulTop = parseInt($(div).find("ul").css("top"));
		if (ulTop != 0) {
			$(div).find("ul").animate({top: ulTop + (heightLi * spost) + "px"});
		}
		return false;
	});
}

$(document).ready(function(){
	scrollable("#render");
});