In Visual Interdev I have a textbox , list box and button in a form . I wish to enter a value in textbox and on button click , this is to be added to the listbox . I keep getting error in this line (*)<BR>Client Script : <BR>var txtvalue <BR>txtvalue = document.form.txt.value<BR> d("&txtvalue&")****<BR>The last line gives me " Type Mismatch error" <BR><BR>Pl guide . <BR><BR>Thanks <BR><BR>