function validateOnSubmit(thisform) {

    var elem;
    var errs=0;
    var formname = thisform;
    if (formname == 'comm')
	{
    // execute all element validations in reverse order, so focus gets
    // set to the first one in error.
    if (!validateConfirm(document.forms.comm.conf, 'inf_conf')) errs += 1;
    //if (!validateCheckbox(document.forms.demo.checks, 'inf_checks', 2)) errs += 1; 
} // end if comm
    if (errs>1)  alert('There are fields which need correction before sending');
    if (errs==1) alert('There is a field which needs correction before sending');

    return (errs==0);
  };