Your coding is as follows:
<span class="disabled_pagination">Prev</span>
<span class="active_link">1</span> Page 1 Active link
<a href="gallery2.html">2</a> Page 2
<a href="gallery3.html">3</a> Page 3
<a href="gallery4.html">Next</a> Page 4

---

Page 2 coding

<a href="gallery.html">Prev</a>
<a class="active_link" href="gallery2.html">2</a>
<a href="gallery3.html">3</a>
<a href="gallery4.html">4</a>
<a href="gallery5.html">Next</a>

---

Page 3 coding

<a href="gallery2.html">Prev</a>
<a class="active_link" href="gallery3.html">3</a>
<a href="gallery4.html">4</a>
<a href="gallery5.html">5</a>
<a href="gallery6.html">Next</a>

---

Page 4 coding

This coding will be for your third to last page. You will use the disabled_pagination for the "Next" button. You will keep your active link in the first position.

<a href="gallery3.html">Prev</a>
<a class="active_link" href="gallery4.html">4</a>
<a href="gallery5.html">5</a>
<a href="gallery6.html">6</a>
<span class="disabled_pagination">Next</span>

---

Page 5 coding

This coding will be for your next last page. You will use the disabled_pagination for the "Next" button. You will be moving your active link down to the second position.

<a href="gallery3.html">Prev</a>
<a href="gallery4.html">4</a>
<a class="active_link" href="gallery5.html">5</a>
<a href="gallery6.html">6</a>
<span class="disabled_pagination">Next</span>

---

Page 6 coding

This coding will be for your last page. You will use the disabled_pagination for the "Next" button. You will be moving your active link down to the third position.

<a href="gallery3.html">Prev</a>
<a href="gallery4.html">4</a>
<a href="gallery5.html">5</a>
<a class="active_link" href="gallery6.html">6</a>
<span class="disabled_pagination">Next</span>

---