current_page = 0;
function update_page_num()
{
	$('#pager_current_site').text(current_page+1);
	if ( current_page + 1 == $('.survey_block').length )
		$('.next_page_link').hide();
	else
		$('.next_page_link').show();
	if ( current_page < 1 )
		$('.prev_page_link').hide();
	else
		$('.prev_page_link').show();
}
function prev_page() {
	var pages = $('.survey_block');
	if ( current_page > 0 )
	{
		$(pages[current_page]).hide();
		$(pages[--current_page]).show();
	}
	update_page_num();
	return false;
}
function next_page() {
	var pages = $('.survey_block');
	if ( current_page < pages.length - 1 )
	{
		$(pages[current_page]).hide();
		$(pages[++current_page]).show();
	}
	update_page_num();
	return false;
}
$(document).ready(function(){
	var pages = $('.survey_block');
	pages.hide();
	$('.survey:first').append($('<div class="pager"><a class="prev_page_link" href="#" onclick="return prev_page()">Zur&uuml;ck</a><a class="next_page_link" style="float: right;" href="#" onclick="return next_page()">Weiter</a><div class="pager_text">Seite <span id="pager_current_site">1</span> von '+pages.length+'</div></div>'));
	$('.survey_block:first').show();
	update_page_num();
});