Recursively merge two objects. Original objects will be overwritten by the ones from updates

merge.js

function merge(original, updates){

	for(var key in updates){

		if(updates[key] instanceof Object && !(updates[key] instanceof Array)){
			if(!original[key]) original[key] = {};
			original[key] = merge (original[key], updates[key]);
		}else{
			original[key] = updates[key];
		}
		
	}

	return original;
}