Bypass Logon on SAP Web Application server

Hi there,

When launching the a ABAP webdynpro developed program via a URL, the 'Logon' screen, popup with

System: <SID>

Client: 001

User: {via pop-up}

Password: {via pop-up}

Language: English

Logon

I am using a PDA to access the URL. When I click on logon button, there were no respond. How can bypass the logon and display the application that I want?

Thanks.