and submit your feedback at the top right corner with your e-mail, so SViewer team can get in touch with you to review your page. In many cases problem comes from Cross-domain embedding (see page 8 in the API document).
That's what I did and thanks to SViewer group guys, after some checking, my problem was solved. (for those who want to install the SViewer, pay attention to the sv_base_url parameter which requires Internet URL absolute path, and not simple absolute path !)
+1 I didn't know that API.