//set counter for file Uploads
      
      var ct = 0;


function add_new_picture() {

        ct++;
        
        if(ct > 4){
          return;
        }

        var i=document.createElement('input');
        i.type='file';
        i.name='extra_file_' + ct;
        i.setAttribute("class","textinput");

       var lineBreaker = document.createElement('br');

        //append the new file upload field
        document.getElementById('new_file_upload').appendChild(i);


     //Increment file counter
     document.getElementById('extra_file_counter').value=ct;

     var txtNode = document.createTextNode("Extra" + ct);
     document.getElementById('new_file_upload').appendChild(txtNode);
     
     //addpend a line break
        document.getElementById('new_file_upload').appendChild(lineBreaker);


}