Custom pagination classes Joomla Virtuemart 2 - php

Question

I need to assign an custom class, lets named it "custom" to the Virtuemart Pagination "Next" link or li. Now every Li from my Ul had class "Next", but what code i should use to make Li with the link to the next page had custom class?
Here is the code
function pagination_item_active(&$item) {
$cls = '';
if ($item->text == JText::_('Next')) { $item->text = '»'; $cls = "next";}
if ($item->text == JText::_('Prev')) { $item->text = '«'; $cls = "previous";}
if ($item->text == JText::_('First')) { $cls = "first";}
if ($item->text == JText::_('Last')) { $cls = "last";}
return "<li class=\"next\"><a class=\"".$cls."\" href=\"".$item->link."\" title=\"".$item->text."\">".$item->text."</a></li>";
}
function pagination_item_inactive(&$item) {
return "<li class=\"pagination-active\"><a>".$item->text."</a></li>";
}

Answer 1

I have found the answer here http://forum.joomla.org/viewtopic.php?t=444384.
Here is the final solution code:
function pagination_list_render($list)
{
$lang =& JFactory::getLanguage();
$html = "<ul class=\"pagination\">";
$html .= '<li class="first">'.$list['start']['data'].'</li>';
$html .= '<li class="prev">'.$list['previous']['data'].'</li>';
foreach( $list['pages'] as $page )
{
$html .= '<li class="num">'.$page['data'].'</li>';
}
$html .= '<li class="next">'.$list['next']['data'].'</li>';
$html .= '<li class="end">'.$list['end']['data'].'</li>';
$html .= "</ul>";
return $html;
}
function pagination_item_active(&$item) {
return "".$item->text."";
}
function pagination_item_inactive(&$item) {
return "<span class=\"inactive\">".$item->text."</span>";
}
I use it to install infinite ajax scroll script, and it works perfectly.

Answer 2

You can set the custom class CSS using:
li.next {
}
See MDN about CSS.