jquery ui dialog get gridview value

jquery ui dialog get gridview value

I have in asp.net a gridview with:

<asp:gridview ...etc
<columns>
  <HeaderTemplate>Questions</HeaderTemplate>
  <ItemTemplate>
    <asp:Label id="lblQuestion" runat="server" text='<%# Bind("Question") %>' ></asp:label>
    <asp:Label id="lblDefinition" runat="server" text='<%# Bind("Definition") %>'  visible="false"></asp:label>
    <button id="opener">?</button>
  </ItemTemplate>
</columns>
</gridview>

<script>
            
// increase the default animation speed to exaggerate the effect
$.fx.speeds._default = 1000;
$(function() {
$( "#dialog" ).dialog({
autoOpen: false,
show: "blind",
hide: "explode"
});
$( "#opener" ).click(function() {
$( "#dialog" ).dialog( "open" );
return false;
});
});
</script>

---------------------------
My question is how do I pass the Definition value (text) to display


in the dialog box?
Sorry if this is obvious, but this is my first go with jquery and jquery ui... Thanks.