On my web tab, a whole bunch of controls and a web combo box.  There are times when the user is fillingout the form when an async postback occurs and my web combo still has not been loaded with information.  If the user were to try and use the mouse wheel to scroll up and down the page, a javascript error occurs in one of the Infragistics files. 

 The error occurs in function igtbl_globalMouseWheel(evnt) on this line: "var comboId=igtbl_getElementById(g.Id).getAttribute("igComboId");".  I get a javascript undefined error, specifically igtbl_getElementById(g.Id) evaluated to be null.

 Has anyone seen this type of behavior before and does anyone know how to stop it.  I tried populating my Web Combo with a dummy dataset but I still recieve the javascript error.

 Thanks,

     -- Joe --