fckediter javascript event function code

demo：

function FCKeditor_OnComplete( editorInstance )
{
("onkeydown", editor_keydown);
("onkeyup", editor_keyup);
}
function editor_keydown()
{
var oEditor = ('inputmsg') ;
var keycode = ;
if(keycode==13) {

}

}
function clearInput()
{
var oEditor = ('inputmsg') ;
( "NewPage" ).Execute(); // ("") ;
}

function editor_keyup()
{
var oEditor = ('inputmsg') ;
var keycode = ;

if(keycode==13) {
clearInput();
}
}