Very good javascript: Add event/remove event

Source: Internet
Author: User
I found it online. It looks good. Remember it.

// Heavily based on the quirksmode addevent contest winner, John resig
// Addevent
Function addevent (OBJ, type, FN ){
If (obj. addeventlistener) obj. addeventlistener (type, FN, false );
Else if (obj. attachevent ){
OBJ ["E" + Type + FN] = FN;
OBJ [type + FN] = function () {OBJ ["E" + Type + FN] (window. Event );}
OBJ. attachevent ("On" + type, OBJ [type + FN]);

// Removeevent
Function removeevent (OBJ, type, FN ){
If (obj. removeeventlistener) obj. removeeventlistener (type, FN, false );
Else if (obj. detachevent ){
OBJ. detachevent ("On" + type, OBJ [type + FN]);
OBJ [type + FN] = NULL;
OBJ ["E" + Type + FN] = NULL;


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