var progress = function(n, d) {
$innerbar.width = $bar.width * n / d + 1;
$text.text = "downloaded " + (xwt.math.ceil(100 * n/d)) + "%";
var progress = function(n, d) {
$innerbar.width = $bar.width * n / d + 1;
$text.text = "downloaded " + (xwt.math.ceil(100 * n/d)) + "%";