Is it possible to do something like this?
<telerik:GridTemplateColumn HeaderText="" UniqueName="TemplateColumn3">
<ItemTemplate>
<asp:ImageButton ID="info" runat="server" OnClientClick="addsubmenu(<%# Eval("DestID") %>)" ImageUrl="~/globalgraphics/webicons/info.jpg" />
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridTemplateColumn HeaderText="" UniqueName="TemplateColumn3">
<ItemTemplate>
<asp:ImageButton ID="info" runat="server" OnClientClick="addsubmenu(<%# Eval("DestID") %>)" ImageUrl="~/globalgraphics/webicons/info.jpg" />
</ItemTemplate>
</telerik:GridTemplateColumn>