rxnlabs

<?php
/*Add this code to your functions.php file of current theme OR plugin file if you're making a plugin*/
//add the button to the tinymce editor
add_action('media_buttons_context','add_my_tinymce_media_button');
function add_my_tinymce_media_button($context){

return $context.=__("
<a href=\"#TB_inline?width=480&inlineId=my_shortcode_popup&width=640&height=513\" class=\"button thickbox\" id=\"my_shortcode_popup_button\" title=\"Add My Shortcode\">Add My Shortcode</a>");
}