change the menu code:
<ul class="level-0" id="cssmw">
<li><span><a href="/index.html">Home</a></span></li>
<li><span><a href="/products.html">Products</a></span>
<ul class="level-1">
<li><span><a href="/fadu.html">Flange Assembly Demonstration Unit</a></span></li>
<li><span><a href="/perfectseal.html">PerfectSeal Gaskets</a></span></li>
<li><span><a href="/documents.html">Techncial Documents</a></span></li>
<li><span><a href="/deftags.html">Equipment Deficiency Tags</a></span></li>
<li><span><a href="/ebox.html">eBOX Electronics Enclosure</a></span></li>
<li><span><a href="/Templates/fadu_parts.html">FADU Replacement Parts</a></span></li>
<li><span><a href="/bpdu.html">EPRI BPDU Repairs & Spares</a></span></li>
</ul>
</li>
<li><span><a href="/services.html">Services</a></span>
<ul class="level-1">
<li><span><a href="/intel.html">Business Intelligence Operations</a></span></li>
<li><span><a href="/research.html">Contract Technical Research</a></span></li>
<li><span><a href="/technology.html">New Technology Development</a></span></li>
<li><span><a href="/training.html">Personnel Training Programs</a></span></li>
<li><span><a href="/process.html">Process Improvement</a></span></li>
<li><span><a href="/software.html">Software Development</a></span></li>
<li><span><a href="/consulting.html">Technical Consulting</a></span></li>
</ul>
</li>
<li><span><a href="/awards.html">Awards</a></span></li>
<li><span><a href="/company.html">Company Info</a></span></
<ul class="level-0" id="cssmw">
<li><span><a href="/index.html">Home</a></span></li>
<li><span><a href="/products.html">Products</a></span>
<ul class="level-1">
<li><span><a href="/fadu.html">Flange Assembly Demonstration Unit</a></span></li>
<li><span><a href="/perfectseal.html">PerfectSeal Gaskets</a></span></li>
<li><span><a href="/reports.html">Technical Reports</a></span></li>
<li><span><a href="/deftags.html">Equipment Deficiency Tags</a></span></li>
<li><span><a href="/ebox.html">EBOX Electronics Enclosure</a></span></li>
<li><span><a href="/Templates/fadu_parts.html">FADU Replacement Parts</a></span></li>
<li><span><a href="/bpdu.html">EPRI BPDU Repairs & Spares</a></span></li>
</ul>
</li>
<li><span><a href="/services.html">Services</a></span>
<ul class="level-1">
<li><span><a href="/Templates/intel.html">Business Intelligence Solutions</a></span></li>
<li><span><a href="/research.html">Contract Technical Research</a></span></li>
<li><span><a href="/technology.html">New Technology Development</a></span></li>
<li><span><a href="/training.html">Personnel Training Programs</a></span></li>
<li><span><a href="/process.html">Process Improvement</a></span></li>
<li><span><a href="/software.html">Software Development</a></span></li>
<li><span><a href="/consulting.html">Technical Consulting</a></span></li>
</ul>
</li>
<li><span><a href="/recognition.html">Recognition</a></span></li>
<li><span><a href="/company.html">Company Info</a></span></li>
</ul>
<script type="text/javascript">if(window.attachEvent) { window.attachEvent("onload", function() { cssmw.intializeMenu('cssmw'); }); } else if(window.addEventListener) { window.addEventListener("load", function() { cssmw.intializeMenu('cssmw'); }, true); }</script>
; }
</script>
to:
<ul class="level-0" id="cssmw">
<li><span><a href="/index.html">Home</a></span></li>
<li><span><a href="/products.html">Products</a></span>
<ul class="level-1">
<li><span><a href="/fadu.html">Flange Assembly Demonstration Unit</a></span></li>
<li><span><a href="/perfectseal.html">PerfectSeal Gaskets</a></span></li>
<li><span><a href="/documents.html">Techncial Documents</a></span></li>
<li><span><a href="/deftags.html">Equipment Deficiency Tags</a></span></li>
<li><span><a href="/ebox.html">eBOX Electronics Enclosure</a></span></li>
<li><span><a href="/Templates/fadu_parts.html">FADU Replacement Parts</a></span></li>
<li><span><a href="/bpdu.html">EPRI BPDU Repairs & Spares</a></span></li>
</ul>
</li>
<li><span><a href="/services.html">Services</a></span>
<ul class="level-1">
<li><span><a href="/intel.html">Business Intelligence Operations</a></span></li>
<li><span><a href="/research.html">Contract Technical Research</a></span></li>
<li><span><a href="/technology.html">New Technology Development</a></span></li>
<li><span><a href="/training.html">Personnel Training Programs</a></span></li>
<li><span><a href="/process.html">Process Improvement</a></span></li>
<li><span><a href="/software.html">Software Development</a></span></li>
<li><span><a href="/consulting.html">Technical Consulting</a></span></li>
</ul>
</li>
<li><span><a href="/awards.html">Awards</a></span></li>
<li><span><a href="/company.html">Company Info</a></span>
</ul>
<script type="text/javascript">if(window.attachEvent) { window.attachEvent("onload", function() { cssmw.intializeMenu('cssmw'); }); } else if(window.addEventListener) { window.addEventListener("load", function() { cssmw.intializeMenu('cssmw'); }, true); }</script>
the big issue that I see is that there are some orphaned closing tags. for example:
<li><span><a href="/company.html">Company Info</a></span></
the trialing </ is caisng an issue. I cant say if it was there before editing the menu or not, but if it was, it would certainly cause an issue similar to this.
I see other parts of your page that have a similar problem, there are a number of br tags that do not close "<br" instead of "<br />"