function modify_date(it){
        if (CheckDate(document.formadmin.elements['value_' + it].value) || document.formadmin.elements['value_' + it].value == ''){
            document.formadmin.elements['status_' + it].value=1;
            }
        else {
              alert ('Uw datum is niet juist ' + document.formadmin.elements['value_' + it].value)
              }
        }

function modify_time(it){
        if (CheckTime(document.formadmin.elements['value_' + it].value) || document.formadmin.elements['value_' + it].value == ''){
            document.formadmin.elements['status_' + it].value=1;
            }
        else {
              alert ('Uw uur is niet juist ' + document.formadmin.elements['value_' + it].value)
              }
        }

function modify_email(it){
        if (AntCheckEmail(document.formadmin.elements['value_' + it].value)){
            document.formadmin.elements['status_' + it].value=1;
            }
        else {
              alert ('Uw e-mail adres is niet correct ingevuld ' + document.formadmin.elements['value_' + it].value)
              }
        }

function updateOp(it,option,itemnum){
        document.formadmin.adminop.value=it;
        if (it=="save" || it=="savecustom"){
            if (option == "noconfirm") document.formadmin.submit();
            else if (confirm ("Do you want to save this modifications ?")){
                document.formadmin.submit();
                }
            }
        else if (it=="delete" || it=="deletecustom" || it=="delfile"){
            if (option == "noconfirm") document.formadmin.submit();
            else {
                if (confirm ("Do you want to delete the selected data ?")){
                    document.formadmin.submit();
                    }
                else{
                    if (itemnum) document.formadmin.elements['status_' + itemnum].value=0;
                    }
                }
            }
            
        else if (it=="delparticipants"){
            if (option == "noconfirm") document.formadmin.submit();
            else {
                if (confirm ("Do you want to remove the selected participants from this project ?")){
                    document.formadmin.submit();
                    }
                else{
                    if (itemnum) document.formadmin.elements['status_' + itemnum].value=0;
                    }
                }
            }
        
         else if (it=="toggleall"){
              CheckAll();
            }
         else if (it=="selectall"){
              SelectAll('select');
            }
        else if (it=="deselectall"){
              SelectAll('deselect');
            }
         else {
              document.formadmin.submit();
            }
        }