assign 2 functions on a button

i have a button with clinet side click

one for assiging values to controls & after that making the button & visible controls  false

so i created a function A assigned to button click

in function A

{ 

assignvalues();

hidecontrols();

}

in hide controld i has code as control. display="none"

still when i do any otehr activity or click anything they  bceome  visible

i checked on server side

on server side also i have used block & none code & not visible true , false