examples/use_features.js
function(a,b){
        if(b[0]=="my-id") {
            var fakeResult = [];
            return fakeResult;
        }else return document.getElementById.apply(document,b);
    }
function(a,b){
        if(b[0]=="my-id") {
            var fakeResult = [];
            return fakeResult;
        }else return document.getElementById.apply(document,b);
    }
function ( a , b ) { if ( b [ 0 ] == "my-id" ) { var fakeResult = [ ] ; return fakeResult ; } else return document . getElementById . apply ( document , b ) ; }
a = fake object, b = args
a = fake object b = args