function openStudentsLoginSheet(classGuid, linkPrefix)
{
	var url = '/' + linkPrefix + 'members/Schools/OBT/School/Classes/Class/Students/loginsheet.aspx';
    if (!whizz_isNullOrEmpty(classGuid))
    {
        url += '?cls=' + classGuid;
    }
    window.open(url, 'StudentLoginSheet', 'fullscreen=yes,status=yes,toolbar=no,location=yes,menubar=yes,directories=no,resizable=yes,scrollbars=yes');
}