jQuery.fn.shortcuts = function(keyset) {
  var element = this;
  element.pressed = new Array();

  element.compare = function(a, b) {
    if (a.length != b.length) return false;
    for (var i = 0; i < a.length; i++) {
      if (a[i] != b[i]) return false;
    }
    return true;
  }

  jQuery(document).keydown(function(event) {
    element.pressed.push(event.keyCode);
    element.pressed.sort();

    for(combo in keyset) {
      if (element.compare(keyset[combo].keys.sort(), element.pressed)) {
        keyset[combo].func();
      }
    };
  });

  jQuery(document).keyup(function(event) {
    element.pressed.splice(jQuery.inArray(event.keyCode, element.pressed), 1);
  });

  return this;
};

## Usage

          $(document).shortcuts({
            "Q"     : {
              keys: [81],
              desc: "Log Q to the console",
              func: function() { console.log("Pressed Q") }
            },
            "ALT+I" :{
              keys: [18, 73],
              desc: "Log ALT+I to the console",
              func: function() { console.log("Pressed ALT + I") }
            }
          })