var tab = '';
if (tab == 'banners1' || tab == 'banners2' || tab == 'banners3'){
	openTab(tab);
}
var opened_tab = 'banners1';
function openTab(id){
	if(opened_tab != ''){
		document.getElementById((opened_tab + '_tab')).style.display = 'none';
	}
	if(document.getElementById(id)){
		opened_tab = id;
		document.getElementById((opened_tab + '_tab')).style.display = 'block';
	}
}

function submitAnswer (answerId) {
  document.getElementById('question_form')['answer'].value=answerId;
  document.getElementById('question_form').submit();
}