How to read a value from a WebCombo (Infragistics)?

Hi!

I have a Problem with reading a value from an Infragistics WebCombo.
Actually this is a Javascript problem but i hope posting in this NG is
more promising.

I try to ready a value from an ComboBox with one of these Functions:

igcmbo_getElementById("WebCombo2").value;
or
document.getElementById("WebCombo2").value; (both have the same
effect)

As result i got: Select-1Valuetest
(test is what i wrote in the ComboBox)
How can i read the display value from the ComboBow without the
DropDownList information (Select-1Value)?

Gruß
Oliver