[RESOLVED] f.submit not working for website

The very basic code below populates the trainline form online. When I come to submit the form, the page just refreshes itself. If I omit the f.submit command and press the online button myself it works. Is there another option for submitting or do i have the wrong command? Any advice or help appreciated.

Code:

---

Sub get_times_test()

  Set web = CreateObject("InternetExplorer.Application")
  web.Navigate2 "http://www.thetrainline.com/buytickets/?href=&T2ID=8507_20078301696"
  web.Visible = True
 
  Do Until web.ReadyState = 4
    DoEvents
  Loop
 
  Set f = web.Document.forms(0)
 
  f("OriginStation").Value = "LDS"
  f("DestinationStation").Value = "MAN"
  f("outwardDate").Value = "20/12/09"
  f("OpenReturnJourneyCheckBox").Checked = True
  f.submit

End Sub

---

try
f("extendedSearch").click
as there is more than one submit button, hard to know which is submitted

Brilliant. Thanks.