var currentquestion;

function getquestion(sender)
{
    if(currentquestion==sender)
    {
        sender.parentNode.id='';
        currentquestion=null;
    }
    else
    {
        try
        {
            currentquestion.parentNode.id='';
        }
        finally
        {
            sender.parentNode.id='selected';
            currentquestion=sender;
        }
    }
}