border-collapse and outerWidth
Demonstrates issue with border-collapse:collapse and jQuery's outerWidth()
HTML
<table style="border-collapse:separate">
<tr>
<td>Hello</td>
<td>Worldh</td>
</tr>
</table>
<table style="border-collapse:collapse">
<tr>
<td>Hello</td>
<td>Worlgggd</td>
</tr>
</table>
CSS
td { width:80px; background-color:#dfd; border-right:1px solid black; }
table, p { margin-bottom:8px; }
JavaScript
var tables = $("table");
var outputs = $("span");
for (var i = 0; i < tables.length; ++i) {
var t = tables.eq(i);
var tdow = t.find("td").outerWidth();
$("body").append("<p>" + t.attr("style") + " td outerWidth == " + tdow);
}