hye all.....i just created form and one of the button that i use, i wrote the code bellow

Code:
function ff_tambah_action(element, action)
{
   switch (action) {
       case 'click':
        ff_getElementByName('jadual').value = ff_getElementByName('senarai_hari').value + " " + ff_getElementByName('masa').value +
         " " +"-"+ " " + ff_getElementByName('masa2').value + " " + ff_getElementByName('senarai_subjek').value; 
        break;
       default:;
   } // switch
} // ff_tambah_action
the function of the button is, when i click that button, it will display value from select list to the textarea and this will continue until the user finished selected all the value. i may display the result, but i cannot make the things go looping. also, everytime the button click, it will display in the new line. ur help will be much helpful and this is urgent. thank you......