Simple function to deal with big nesting objects

gistfile1.js

var use = function(package){
  var steps = package.split('/'), /* Nesting */
      pack = window[steps[0]]; /* Global reference */

  /* Remove first element */
  steps.shift()

  /* Errors */
  if(steps.length < 1){
     throw "Hmm, why don't you provided a package? ";
  }
  if(!pack){
    throw "There's no " + steps[0] + " global Object in your app! ";
  }

  /* Object Recursive deep */
  function deep(steps){
    var s = steps;
      if(pack[s[0]]){
      pack = pack[s[0]];				
      s.shift(1);
      deep(s);
    }
  }
	
  /* There's a package? Call recursive function */
  if(package !== '' && package !== undefined && package !== null){
    deep(steps);
  }
  return pack;
};

/*
  How to use ? 
  Look at this literal object
*/
var library = {		
	tools : {
	  foo : {
	    bar : {
	      baz : {
		bin : function(){
		  alert('library/tools/foo/bar/baz/foo')
		}
	      }
	    }
	  }
        }
};

/* I know it's sucks... but, with this function you can do this: */
var baz = use('library/tools/foo/bar/baz');
baz.bin();

/* Instead of using */
library.tools.foo.bar.baz.bin();

/* 
 It's useful ?
 Is for nothing?
 Well... I just thought about it and decided to create this snippet.
 Enjoy, or not!
*/