Smallest Pub\Sub Pattern (268 chars)

pub-sub.js

//pubsub pattern 
(function (eventList, i, item) {
    eventList = [];
    this.pubsub = {
        fire: function (event, a, b, c, d, e) {
            for (i in eventList) {
                if (eventList[i] == event) {
                    eventList[+i + 1](a, b, c, d, e);
                }
            }
        },
        subscribe: function (event, fn) {
            eventList.push(event, fn);
        },
        unsubscribe: function (fn) {
            eventList.splice(eventList.indexOf(fn) - 1, 2);
        },
        unsubscribe_all: function (event) {
            for (i = 0; item = eventList[i]; i++) {
                if (item == event) {
                    eventList.splice(i, 2);
                    i--;
                }
            }
        }
    }
})();


//pubsub pattern - obfuscated (268 chars)
!function(a,b,c){a=[],this.pubsub={fire:function(c,d,e,f,g,h){for(b in a)a[b]==c&&a[+b+1](d,e,f,g,h)},subscribe:function(b,c){a.push(b,c)},unsubscribe:function(b){a.splice(a.indexOf(b)-1,2)},unsubscribe_all:function(d){for(b=0;c=a[b];b++)c==d&&(a.splice(b,2),b--)}}}()

//pubsub usage

var handler = function() {
    console.log("handler function is called");
}
pubsub.subscribe("/inbox/update", handler);

pubsub.subscribe("/inbox/message", function(){
    console.log("/inbox/message fired - arguments - " + JSON.stringify(arguments));
});

pubsub.fire("/inbox/update");
pubsub.fire("/inbox/message");
pubsub.fire("/inbox/message", 1, 2);

pubsub.unsubscribe_all("/inbox/message");
pubsub.unsubscribe(handler);

pubsub.fire("/inbox/message");
pubsub.fire("/inbox/update");

Save some bytes:

subscribe: eventList.push,

Any number of arguments pass to fire function:

fire: function(event){
    for(i=0;item=eventList[i];i++){
        if (item == event) {
            eventList[i+1]([].shift.call(arguments,1));
        }
    }
},

Wow :) awesome tnx!

1. this one
   subscribe: eventList.push,

can only work if i use 'bind' - otherwise i just pointing to 'push' function and 'eventList' is just forgoten
subscribe: eventList.push.bind(eventList),

the problem is that 'bind' function isn't supported on IE8, so this is not option for me

2. this one

        fire: function(event,a,b,c,d,e){
            for(i = 0; item = eventList[i]; i++){
                if (item == event) {
                    eventList[i+1](a,b,c,d,e);
                }
            }
        },

is also can be called with variable argumets lenght (but up to 5), and more over it's 7 chars shorter when minified