Replace:
<li><a id="blob5" class="link-5" href="art/" title="Icons" onmouseover="javascript:menuText('A collection of icons I've done over the years for others and myself. Custom icons available upon request.')" onmouseout="javascript:reset()"><span class="alt">Icons</span></a></li>

With:
<li><a id="blob5" class="link-5" href="art/" title="Icons" onmouseover="javascript:menuText('A collection of icons I\'ve done over the years for others and myself. Custom icons available upon request.')" onmouseout="javascript:reset()"><span class="alt">Icons</span></a></li>