$(document).ready(function(){
	var marg_t='-=349px';
	var marg_b='+=349px';
	var count_all = 0;
	var count_curr = 1;
	var cal_wi_num=0;
	var cal_wi_marg='0px';
	$('.cal_i').each(function(){
		count_all=count_all+1;
	})
	if (count_all>1) {
		$('.prev_yl').css({display: 'block'});
	}
	$('.calendar .prev_yl').click(function(){
		if (count_curr<count_all) {
			$('.calendar .cal_wi_i').animate({marginTop: marg_t}, 500);
			count_curr = count_curr+1;
			$('.calendar .prev_yl').oneTime(500, "hide", function() {
				$('.calendar .next_yl').css({display: 'block'})
			});
			if (count_curr>count_all-1){
				$('.calendar .prev_yl').oneTime(500, "hide", function() {
					$(this).css({display: 'none'})
				});
			}
			cal_wi_num=cal_wi_num-349;
		}
	})
	$('.calendar .next_yl').click(function(){
		if (count_curr>1) {
			$('.calendar .cal_wi_i').animate({marginTop: marg_b}, 500);
			count_curr = count_curr-1;
			$('.calendar .next_yl').oneTime(500, "hide", function() {
				$('.calendar .prev_yl').css({display: 'block'})
			});
			if (count_curr<2){
				$('.calendar .next_yl').oneTime(500, "hide", function() {
					$(this).css({display: 'none'})
				});
			}
			cal_wi_num=cal_wi_num+349;
		}
	})
	$('.calendar .prev_yt').click(function(){
		if (count_curr<count_all) {
			cal_wi_num=cal_wi_num-349;
			cal_wi_marg = cal_wi_num+'px'
			$('.calendar .cal_wi_i').css({opacity: 0});
			$('.calendar .cal_wi_i').css({marginTop: cal_wi_marg});
			$('.calendar .cal_wi_i').animate({opacity: 1}, 1000);
			count_curr = count_curr+1;
			$('.calendar .next_yl').css({display: 'block'})
			if (count_curr>count_all-1){
				$('.calendar .prev_yl').css({display: 'none'})
			}
		}
	})
	$('.calendar .next_yt').click(function(){
		if (count_curr>1) {
			cal_wi_num=cal_wi_num+349;
			cal_wi_marg = cal_wi_num+'px'
			$('.calendar .cal_wi_i').css({opacity: 0});
			$('.calendar .cal_wi_i').css({marginTop: cal_wi_marg});
			$('.calendar .cal_wi_i').animate({opacity: 1}, 1000);
			count_curr = count_curr-1;
			$('.calendar .prev_yl').css({display: 'block'})
			if (count_curr<2){
				$('.calendar .next_yl').css({display: 'none'})
			}
		}
	})
})