I just begin to write a ASP which have a form that let user to entry the
condition into the form, when user click the submit button, the result(a
table) would show below the form. and also, it still remain the condition
that the user just typing inside.
does anyone tell me how to display the result below the form?

on the other hand, these ASP is using 2-level combo, that means when user
change the combo of country, than the other combo will show the city of these
country, how to do this effect?

I have a idea that is loading ALL data of the city and country in two arrays
in these ASP(about 100 country, 4,000 city), then write a java script to
change the combo box value when "On Change" event occur. Is it the best mothed?