Redirection to another page does not work when pressing a key to Save.

I added some code in the 'JavaScript Onload event' to save the page after pressing F9 key.

When after saving, I want to redirect to another page (which is a different table), the program is returning to the default page.
Where or how do I have to solve this problem ?

// IF keyboard code 'F9' is pressed the form is saved
//****
$(document).keydown(function(e)
{
if(e.which == 120)
{
$("[id^=saveButton]").click();
return true;
location.href = 'dbo_ds_PHP_RoutingSource_Prod_list.php';

}
}
);