Not accepting standard function definition

[jesobreira]

Running Phantom 2.1.1, this works:

page = require('webpage').create();

var testing = function(url) {
	page.open('http://google.com', function (status) {
		console.log('Page loaded.');
		page.render('test.bmp');
	});
};

testing('http://google.com');

But this doesn't:

page = require('webpage').create();

function testing(url) {
	page.open('http://google.com', function (status) {
		console.log('Page loaded.');
		page.render('test.bmp');
	});
};

testing('http://google.com');

It gets stuck and nothing shows up on the console.

Edit: The same code runs well on Mac OS but does not run on Win7.