gistfile1.js

function createHandler(fn, obj) {
	return function(){ fn.apply(obj, arguments) };
}

function a(e) {
	console.log(this.a, e.clientX);
}
function b(e) {
	console.log(this.b, e.clientX);
}
function c(e) {
	console.log(this.c, e.clientX);
}

var obj = {a:"a", b:"a", c:"c"};
var handlera = createHandler(a, obj);
var handlera2 = createHandler(a, obj);
var handlerb = createHandler(b, obj);
var handlerc = createHandler(c, obj);
$(document).bind('click',handlera);
$(document).bind('click',handlera2);
$(document).bind('click',handlerb);
$(document).bind('click',handlerc);
$(document).unbind('click',handlera);
$(document).unbind('click',handlerb);