function showhide(divname)
{
	var div = $('#' + divname);
	var img = $('#' + divname + '_img');
	if (div.is(':visible'))
	{
		div.hide();
		img.attr('src', '/images/b/show.gif');
		return false;
	}
	else
	{
		div.show();
		img.attr('src', '/images/b/hide.gif');
		return true;
	}
}