$('#pay').click(function() {
var timerId, percent;
percent = 0;
$('#pay').attr('disabled', true);
$('#load').css('width', '0px');
$('#load').addClass('progress-bar-striped active');
timerId = setInterval(function() {
percent += 5;
$('#load').css('width', percent + '%');
$('#load').html(percent + '%');
if (percent >= 100) {
clearInterval(timerId);
$('#pay').attr('disabled', false);
$('#load').removeClass('progress-bar-striped active');
$('#load').html('payment complete');
}
}, 200);
});