function showxx(id)
{
	var prevShown;
	if (document.getElementById(id).className.indexOf('short1') > -1)
	{
		isVisible = 1;
		document.getElementById(id).className = '';
		if (prevShown && prevShown != id && document.getElementById(prevShown).className.indexOf('short1') <= -1)
		{
			document.getElementById(prevShown).className = 'short1';
        }
    }
    else
    {
        isVisible = 0;
        document.getElementById(id).className = 'short1';
    }
prevShown = id;
}