Remove arrows from Vertical thumbnails

If you only have a few slides, and you don’t really need the arrows on the vertical thumbnail, you can remove it from this file:

Joomla

plugins\nextendsliderwidgetthumbnail\vertical\vertical.php

WordPress

wp-content\plugins\nextend-smart-slider2-full\plugins\nextendsliderwidgetthumbnail\vertical\vertical.php

Around line Joomla 71. / WordPress 65. is the top arrow:

<div class="nextend-arrow-top"></div>';

After removing, only this code stays:

';

And around line Joomla 105. / WordPress 99. is the bottom arrow:

$html .= '<div class="nextend-arrow-bottom"></div></div></div>';

Which should be like this:

$html .= '</div></div>';

To see the changes in the frontend too, press Refresh Cache at your slider.
slider