The onKeyPress event handler specifies what should happen when any key is pressed when the Document object is in focus.
<html> <head> <script language="JavaScript1.2"> <!-- document.onkeypress = myKeyPressHandler; function myKeyPressHandler() { alert("A key press event took place within the document!"); } --> </script> </head> <body> press a key within this document. </body> </html>