function display_container(con_nr, count)
{
	var con_active = getElement("id", "con_"+con_nr);
	con_active.style.display = 'block';
	var tab_active = getElement("id", "tab_"+con_nr);
	tab_active.style.background = '#CCCCCC';
	for(var i = 1; i <= count; i++)
	{
		var con = getElement("id", "con_"+i);
		if(i != con_nr)
		con.style.display = 'none';
		var tab = getElement("id", "tab_"+i);
		if(i != con_nr)
		tab.style.background = '#E5E5E5';
	}
}