Q tal, acá un script para inhabilitar la tecla enter. Espero te pueda servir!!
Código HTML:
<SCRIPT LANGUAGE="JavaScript">
function getKey(keyStroke) {
isNetscape=(document.layers);
eventChooser = (isNetscape) ? keyStroke.which : event.keyCode;
if (eventChooser==13) {
return false;
}
}
document.onkeypress = getKey;
</script>