Don't you just love it when a developer turns your pretty, compliant code:

<ul class="tab2 clearfix">
<li class="active"><a href="#">Product Details</a></li>
<li><a href="#">Specifications</a></li>
</ul>
======================================

into:

<table border="0" cellpadding="0" cellspacing="0" class="rich-tabpanel " id="productDetail:_id33" style="width:"><tbody><tr><td align="right" class="dr-bottom-line tab2"><!-- table border="0" cellpadding="0" cellspacing="0" style="position:relative;top:1px" --><table border="0" cellpadding="0" cellspacing="0"><tr><td><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" style="width: 1px; " /></td><td id="productDetail:_id34_cell" style="height: 100%; vertical-align: bottom;" class="dr-tbpnl-tbcell-act rich-tabhdr-cell-active"><table border="0" cellpadding="0" cellspacing="0" id="productDetail:_id34_shifted" onclick="if (RichFaces.onTabChange(event, 'productDetail:_id33','productDetail:_id34')) RichFaces.switchTab('productDetail:_id33','productDetail:_id34','_id34');" style="position:relative; top:1px;;height : 100%; "><tr><td class="dr-tbpnl-tbbrdr rich-tabhdr-side-border"><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" width="1" /></td><td class="dr-tbpnl-tbtopbrdr rich-tabhdr-side-cell"><table border="0" cellpadding="0" cellspacing="0" style="height: 100%; width: 100%;"><tr><td id="productDetail:_id34_lbl" onmouseover="RichFaces.overTab(this);" onmouseout="RichFaces.outTab(this);" class="dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-act rich-tab-active ">Product Details</td></tr></table></td><td class="dr-tbpnl-tbbrdr rich-tabhdr-side-border"><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" width="1" /></td></tr></table></td><td><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" style="width: 1px; " /></td><td id="productDetail:_id56_cell" style="height: 100%; vertical-align: bottom;" class="dr-tbpnl-tbcell-inact rich-tabhdr-cell-inactive"><table border="0" cellpadding="0" cellspacing="0" id="productDetail:_id56_shifted" onclick="if (RichFaces.onTabChange(event, 'productDetail:_id33','productDetail:_id56')) RichFaces.switchTab('productDetail:_id33','productDetail:_id56','_id56');" style="position:relative;;height : 100%; "><tr><td class="dr-tbpnl-tbbrdr rich-tabhdr-side-border"><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" width="1" /></td><td class="dr-tbpnl-tbtopbrdr rich-tabhdr-side-cell"><table border="0" cellpadding="0" cellspacing="0" style="height: 100%; width: 100%;"><tr><td id="productDetail:_id56_lbl" onmouseover="RichFaces.overTab(this);" onmouseout="RichFaces.outTab(this);" class="dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-inact rich-tab-inactive ">Specifications</td></tr></table></td><td class="dr-tbpnl-tbbrdr rich-tabhdr-side-border"><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" width="1" /></td></tr></table></td><td><img border="0" height="1" src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" style="width: 1px; " /></td></tr></table><div style="display: none;"><input id="productDetail:_id33_input" name="productDetail:_id33" type="hidden" value="_id34" /><script type="text/javascript">RichFaces.panelTabs['productDetail:_id33']=[{'inactiveClass':'dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-inact rich-tab-inactive ','ontabenter':'','name':'_id34','cellActiveClass':'dr-tbpnl-tbcell-act rich-tabhdr-cell-active','cellInactiveClass':'dr-tbpnl-tbcell-inact rich-tabhdr-cell-inactive','activeClass':'dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-act rich-tab-active ','id':'productDetail:_id34','ontableave':''} ,{'inactiveClass':'dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-inact rich-tab-inactive ','ontabenter':'','name':'_id56','cellActiveClass':'dr-tbpnl-tbcell-act rich-tabhdr-cell-active','cellInactiveClass':'dr-tbpnl-tbcell-inact rich-tabhdr-cell-inactive','activeClass':'dr-tbpnl-tb rich-tab-header dr-tbpnl-tb-act rich-tab-active ','id':'productDetail:_id56','ontableave':''} ] ;</script></div></td></tr><!-- tr>
<td class="dr-bottom-line" width="100%"><img src="/omax/a4j_3_1_3.GAimages/spacer.gif.faces" width="1" height="1" alt="" border="0"/></td>
</tr --><tr><td height="100%" id="productDetail:_id34"><table border="0" cellpadding="10" cellspacing="0" class="dr-tbpnl-cntnt-pstn rich-tabpanel-content-position" style="position : relative;" width="100%"><tr><td class="dr-tbpnl-cntnt rich-tabpanel-content " style="; ">
======================================

Then you have to do clean up for 2 weeks to get it to look somewhat like the original comp. ;P

/rant

I have designers do the same thing to me all the time. I am a developer but I am the one most concerned with and knowledgable about semantic HTML and CSS design.