Looks like their site was updated so that may be why it doesn't work.
The source also has a little bit of scraping protection by making the IP's convoluted.
PHP Code
<?php
</style><span class="Q2Zp">22</span><span style="display:none">27</span><span class="Q2Zp">27</span><span></span><span class="Q2Zp">31</span><span></span><span class="Q2Zp">36</span><div style="display:none">36</div><span class="Q2Zp">64</span><div style="display:none">64</div><span style="display:none">81</span><span></span><span style="display:none">165</span><span></span><span style="display:none">168</span><span class="Q2Zp">168</span><div style="display:none">168</div><div style="display:none">170</div><span style="display:none">180</span><span class="Q2Zp">180</span><span></span>190<span></span><span style="display:none">221</span><span style="display:none">233</span><div style="display:none">233</div><div style="display:none">235</div><span class="Q2Zp">249</span><div style="display:none">249</div>.<span style="display: inline">102</span><span style="display:none">224</span><span class="Q2Zp">224</span><span></span><span style="display: inline">.</span><span style="display: inline">28</span><span class="Q2Zp">170</span>.<span style="display: inline">40</span><div style="display:none">231</div></span></td>
That gives the IP for 190.102.28.40. You can find all the numbers hidden away in there.
So simply download the page as a string with the WebClient class or something, then split/parse the source accordingly.
There are much easier proxy list websites to scrape (some even include.. proxy list files).