$(function() {

    window.uploadForms = 1;

    checkInterface();

    $('a').attr('target', '_blank');

    $('#morelink').click(function() {

        window.uploadForms += 1;

        $('form table').append('<tr><td><input type="file" name="upload_file[]" id="userfile" /></td><td class="progress"><div><div class="bar">&nbsp;</div><div class="percent">0%</div></div></td></tr>');

        checkInterface();

        return false;

    });

    $('#lesslink').click(function() {

        if (window.uploadForms > 1) {

            window.uploadForms -= 1;

            $('form tr:last').remove()

        }

        checkInterface();

        return false;

    });

});

function checkInterface() {

    if (window.uploadForms > 1) {

        $('#lesslink').show();

    } else {

        $('#lesslink').hide();

    }

    $('#submitcell').attr('rowspan', window.uploadForms);

}