Figure 7: Callback function

function vldItmResponse() {

    if(http.readyState == 4 && http.status == 200){

        var response = http.responseText;

        var cmp = new Array();       

       

     cmp = response.split('|');



            var fld = document.getElementById(cmp[0]);

      if(cmp[1] == 'NOT_FOUND'){

                fld.className='input_error';

      } else{

                fld.className='input';            

            }           

    }

}