asp:Button ID="Action" runat="server" Text="Select" Width="60px"/>
'Linkthumb4'); NO working well to search the Linkthumb4.Client ID
'DialogOpener1')).open('ImageManager'); NO working well get DialogOpener1.ClientID
"onClick", "lauch();return false;"); added server side to add after my code
Someone have one solution to build completly this ImageManager server side or to attach one complementary action server side to asp:button without postback event.