Hi.  We have been working with infragistics controls for the past few months, and we just recently purchased your license So, we are using The Web Tab, and in each web tab, is a user control.  some tabs are static, and some are dynamically created at runtime.  In the user controls, one user control has the tree control, which works OK, but is slow when I click on a node to expand the levels of the tree.  But, also I was using javascript popup windows to display confirm OK / cancel boxes, and other radio buttons  to the user, and perform various functions based on what the user selects.  When I display the javascript popups it's very slow for them to appear, and also, they perform a postback from the popups, and refreshes the screen, and I want to eliminate the flashing.  I have put the tree control inside an </asp:UpdatePanel>, which is all inside the user control.  Is there a better way of doing this?  .  What about using the infragistics WebDialog control??  Would that solve the problem?  Also, the tree is bound to 2 datasets, so is that why it's slow? 

Thank you very much