val_int = 0 ;
function progress_bar() {
		document.getElementById('container_bar').style.display = 'block';
		if (val_int < 300) {
			setTimeout("progress_bar();",10);
		} else  {
			document.cart_quantity.submit();
		}
		val_int = val_int + 1;
		document.getElementById('bar').style.width = val_int + 'px';
		document.getElementById('bar').innerHTML = parseInt(val_int / 3) + '%';
		return false;
}