Prevent a javascript function from executing twice

[Vijay]

hi,

I have a select dropdown and 5 text fields. based on the option
selected (which are the units - cm/mm/inches/ft/yard etc), i change
the values in the text fields using javascript to the corresponding
units.

my problem is that when the options are selected very quickly(for eg
using the keyboard's up/down keys) then quickly, the text field values
lose their connection with the select box and the values become
illegal.
I suspect that the javascript function is being called even before the
earlier execution has not terminated.
I tried using a global variable and using it as a lock, but still no
success.

What possibly am i doing wrong here?

Thanks for any help

 

[RobG]

Vijay wrote:
[...]

What possibly am i doing wrong here?

Without a small code sample showing the behaviour, we're just
guessing. Can you provide a hint?