Hi there. I need to construct an xpath string to select all descendants of a certain table with these conditions:

• The table is a descendant of a form with a specific action attribute value.
• The selected descendants are text nodes.
• The text node content can only contain whitespace.

It'll probably look something like:

//form[@action = "submit.html"]//table//text()[ ...? ]

Any tips would be appreciated. Thanks.

Edit: For clarity, here is my current (working) compromise:

function KillTextNodes(rootpath)
{
    XPathIterate(rootpath + '//text()', function(node)
    {
        var tagname = node.parentNode.tagName;
        if (tagname != 'OPTION' && tagname != 'TH')
            Kill(node);
    });
}