Modify the Object prototype to allow a passed object argument to be merged in.

merge.js

// http://stackoverflow.com/questions/171251/how-can-i-merge-properties-of-two-javascript-objects-dynamically
Object.prototype.merge = function(mergeFrom){
    var newObj = {};
    for (var attrname in this) { newObj[attrname] = this[attrname]; }
    for (var attrname in mergeFrom) { newObj[attrname] = mergeFrom[attrname]; }
    return newObj;
};