Search body for a href with specific class and append after a div

I have a wordpress site and i have install a plugin called "better read more". With this and using a shortcode you can break the content and a link appears that say "press here to read full article". And ofcourse this link loads dynamicly when you have inster the shortcode of this plugin.

I am trying to appendAfter this dynamcaly generated link another div.

This dynamic link that this plugin generates is:

<a href="#" class="brm-more-link">click here to read more...</a>

I tried the code bellow without luck and unfortunately my skills are not so good.

var myva = '<div style="width:300px; height:250px; background-color:#000;"></div>';
jQuery(myva).insertAfter(".brm-more-link");

Any suggestions please?

via Chebli Mohamed