No Spaces or Hypens

[JohnSmith]

I am doing some form validation and I want to call a fucntion from my input box that will prevent users from enetring in a space or a "-"...

How can I prevent users from enetring in spaces or "-" into the text box

[i00]

<input ............ onKeypress="if (event.keyCode = 45 || event.keyCode = 32)event.returnValue = false;">

[i00]

oh yea if u were wondering
45 is the ascii code for -
and 32 for space