Hide subform and static text based on text field

Dear all,

I am new to Adobe forms.. Please help me in the below requirement.

I have a subform which has:

1. a text field

2. another subform which further has

a) some static text

b) another subform: it further has:

i) some static text and some text fields

3.some static text

now my requirement is that if

1. text field is blank then

2. subform and 3. static text should not be displayed.

Please help me in this. I know some java script need to be written but what exactly that i hav no idea and what about static text?

since we cant write script for static text. Please help.