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show/hide nested table in gridview with javascript

weimha asked
Last Modified: 2008-07-08
I have a template field in my gridview that contains an image, a label, and then a table of data.  I want to make it so the table of data can be hidden/shown for each individual row in the gridview by clicking on the image.  I'm using javascript to do this.  It works to show the table, but it doesn't hide the table.  

Here is what I have:

function expandcollapse(obj, row)
        var div = document.getElementById(obj);
        var img = document.getElementById('img' + obj);
        if (div.style.display = "none")
            div.style.display = "block";
            img.src = "../Images/minus.gif";
            img.alt = "Close";
            div.style.display = "none";
            img.src = "../Images/plus.gif";
            img.alt = "Expand";

 <a href="javascript:expandcollapse('div<%# Eval("OrderDate") %>', 'one');">
      <img id="imgdiv<%# Eval("OrderDate") %>"
               alt="Expand" width="9px" border = "0" src="../Images/plus.gif" />                                
 <asp:Label ID="Label4" runat="server" Text='<%# Bind("ChargeAmount", "{0:n}") %>'></asp:Label>
 <div id="div<%# Eval("OrderDate") %>" style="display:none">
      <td><%# Eval("EmployeeCharge", "{0:n}") %></td>
       <td><%# Eval("DepartmentCharge", "{0:n}") %></td>
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