var current_page = 1;

function goto_page(page_number) {
	
	var next_div = '#page_'
	var current_div = '#page_' + current_page;
	
	if (current_page == page_number) return;
	
	if (page_number > 0 && page_number < 7) next_div = next_div + page_number;
	else return;
	
	if (page_number == 1) { $('.previous_link').hide(); $('.next_link').show(); }
	else if (page_number == 6) { $('.previous_link').show(); $('.next_link').hide(); }
	else { $('.previous_link').show(); $('.next_link').show(); }
	
	$(current_div).fadeOut('normal', function () {	$(next_div).fadeIn('normal'); } );
	
	current_page = page_number;
	
}

function next_page() { goto_page(current_page + 1); }
function previous_page() { goto_page(current_page - 1); }