|<asp:TextBox runat="server" onblur="handleTextBlur(this);" ... |
|function handleTextBlur(element) |
| var control = $(element).siblings("input[id*='div-comment-']"); |
Using the "siblings" selector will limit my search to elements in the same container as my original element, and then using the "[id*= ]" syntax enables me to do a wildcard search for a control ID. Some combination of the jQuery search patterns should give you the control you need.
Hope that helps!