qrcode show a white line when rendered with table in ie

[screamleen]

in order to support > ie8, i render qrcode with configs like this:
var qrUrl = 'http://ds.pearson.com.hk/qr?source=apps&originId=longman_plus_android';
$('#qr-code-container').qrcode({
render: "table",
width: 170,
height: 170,
text: qrUrl
})
it works fine in chrome, but ie was not especially in ie8.
it will render a qrcode but a slim white line across it.