No Rounded Corner when Setting a Background image in Firefox & Opera

[AimanZidan]

<table style="width: 100%;border-collapse: separate; border-spacing:0 8px;" cellpadding="0">
<tr style="background-image: url('image.gif');height: 30px; color: #2E2E2E;">
<td class="myCorner" data-corner="left 8px" style="width: 30px;height: 35px;">
</td>
</tr>
</table>

IT only works in Chrome and IE. Please fix this bug in Firefox and Opera.

Thank You very much