The first issue you mentioned is not tab slide related. Some sites simply prevent you from using them in iframes (like google, so in retrospect that might have not been a good example to use)
check this link out for more info
As for the height of the iframe , I made a wrong css entry in the template.
I will issue a fix for this in the v2.0.1. In the meantime to get it working
and change the
auto on the last line. should be like this:
<iframe class="tab_slide_iframe" src="<?php echo $url; ?>" style="width:<?php echo $width; ?>;height:auto;"></iframe>