function count_bns_news () {
	var count = $('.home_block_bns_table tr').children().length;
	return parseInt(count/2);
}

function current_bns_news() {
	var current = '';
	$('.home_block_bns_table tr').children().each(function () {
		if(this.style.display != 'none' && current == '') { 
			current = this.id.substr(13); 
		}
	});
	return current;
}

function page_bns_next() {
	var current = current_bns_news();
	var count = count_bns_news();
	current = parseInt(current);
	if((current+1) == count) {
		$('#bns_news_title_'+(count-1)+', #bns_news_img_'+(count-1)+', #bns_news_text_'+(count-1)+', #bns_news_date_'+(count-1)).hide();
		$('#bns_news_title_0, #bns_news_img_0, #bns_news_text_0, #bns_news_date_0').show();
	} 
	else {
		$('#bns_news_title_'+current+', #bns_news_img_'+current+', #bns_news_text_'+current+', #bns_news_date_'+current).hide();
		$('#bns_news_title_'+(current+1)+', #bns_news_img_'+(current+1)+', #bns_news_text_'+(current+1)+', #bns_news_date_'+(current+1)).show();
	}
}

function page_bns_prev() {
	var current = current_bns_news();
	var count = count_bns_news();
	current = parseInt(current);
	if(current != 0) {
		$('#bns_news_title_'+current+', #bns_news_img_'+current+', #bns_news_text_'+current+', #bns_news_date_'+current).hide();
		$('#bns_news_title_'+(current-1)+', #bns_news_img_'+(current-1)+', #bns_news_text_'+(current-1)+', #bns_news_date_'+(current-1)).show();
	}
	else {
		$('#bns_news_title_0, #bns_news_img_0, #bns_news_text_0, #bns_news_date_0').hide();
		$('#bns_news_title_'+(count-1)+', #bns_news_img_'+(count-1)+', #bns_news_text_'+(count-1)+', #bns_news_date_'+(count-1)).show();
	}
}