function show_page(page){
	var i = 1;
	for(i; i <= form_pages ; i++){
		//caly div trescia
		document.getElementById('form_page_'+i).style.display = 'none';
		//przyciski formularza
		document.getElementById('form_page_'+i+'_b').style.display = 'block';
	}
	document.getElementById('form_page_'+page).style.display = 'block';
	document.getElementById('page_selector_number').innerHTML = page;
}

function show_summary_form(pages){
	var i = 1;
	for(i; i <= pages ; i++){
		document.getElementById('form_page_'+i+'_b').style.display = 'none';
		document.getElementById('form_page_'+i).style.display = 'block';
	}
	
}