Postback does not happen after NO button clicked

[ashishmeshram33]

I have a confirmation pop up in javascript using msgBox function of VBScript.
On NO button click i have written

event.returnValue = false;

On YES button clicked ,everything works fine but
When NO button is clicked, any next post back (Say of a SelectedIndexChanged of a Dropdown) does not happen.

OnClientClick="checkActiveValidators();SavePopUpClient();"
This is the way I have written it.

Please Help!

[Padonak]

function b_or_not_2b(){
var what_am_i_to_do='';
if(my_script_written_in == 'JavaScript'){what_am_i_to_do='Post the full code';}
else{what_am_i_to_do='Find the proper forum';}
alert(what_am_i_to_do);
}

b_or_not_2b();