How to call javascript function from asp.net code behind function -

javascript code

function logoutpop() {        var = confirm("are sure !");        if (a = true)            return true;        else return false;     } 

aspx file

    protected void menu1_menuitemclick(object sender, menueventargs e)         {             string selecteditem = e.item.value;             if (selecteditem == "logout")             { // here want call javascript function logoutpop() , check return value. if true want redirect login page else nothing. 

is there way . tried scriptmanager not success . please . thank you.

use clientscriptmanager.registerclientscriptblock

see following link. http://msdn.microsoft.com/en-us/library/btf44dc9.aspx

regards,