How everything is asked on same page..(animated query)

programming
1

Hi All,

Plz (Click here) I need logic behind this.

Question is: How Form is loaded in/on same page?, and after filling the form… (…[SIZE=1] if the user is not yet logged in[/SIZE]) how login/password is asked ([SIZE=1]again… on same page[/SIZE]).?

(I am using ASP Language, And i need atleast logic behind this.)

Thanks (“Advance”)