I would agree with #2.  Sealing it up would be easy with some spray foam or caulking.  You would have to put some type of flush trim on to hide the cut, or chisel out a bit more of the sill and piece in some sheetrock and mud it and/or change the window trim to a picture frame casing.   Not really a hard job, just not sure what you want. I would like to see what you want the seat to look like in relationship to the window. How much lower than the window do you want the top of the seat to be?  

How do I remove window sill / apron overhang?
I use the following code. But it is always go to the otherwise condition. I checked the value , and those are correctly passed from java to the jsp. Any missing points?

&lt;c:when test="${pCount &gt; 0}"&gt;
    &lt;display:column class="colPCount" property="pCount " title="${titlePCount}" sortable="true" headerClass="sortable" /&gt;
&lt;/c:when&gt;
&lt;c:otherwise&gt;
    &lt;display:column class="colPCount" title="${titlePCount}"&gt;&amp;nbsp;-&amp;nbsp;&lt;/display:column&gt;
&lt;/c:otherwise&gt;


For the pcount>0 items, still displaying as  '-' in the display tag. Even I reverse the checking condition like pCount&lt;0 in the first condition checking, the display tag always show the otherwise condition. It always pointing to the otherwise condition for every value.

Edited: Full Code

    &lt;display:table class="displayTable" id="itemList"
        name="${sessionScope.itemList}" requestURI="listItem.action"
        pagesize="15" defaultsort="2" defaultorder="ascending" sort="list"&gt;
        &lt;display:column class="colItemName" property="name"
            title="${titleItemName}" sortable="true" headerClass="sortable"/&gt;
        ...
        &lt;c:choose&gt;
        &lt;c:when test="${pCount &gt; 0}"&gt;
            &lt;display:column class="colPCount" property="pCount " title="${titlePCount}" sortable="true" headerClass="sortable" /&gt;
        &lt;/c:when&gt;
        &lt;c:otherwise&gt;
            &lt;display:column class="colPCount" title="${titlePCount}"&gt;&amp;nbsp;-&amp;nbsp;&lt;/display:column&gt;
        &lt;/c:otherwise&gt;
        &lt;/c:choose&gt;
    &lt;/display:table&gt;

