josephwegner/gist:3087360

## gistfile1.js
var html = "<body><div id='test'><script type='text/javascript' src='http://testScript.com'></script><img src='http://www.google.com' /><img class='test1' src='http://www.test.com' /><img src='http://woot.com' class='test2' /></div></body>";

html.replace(/<img [^>]*src=["']([A-Za-z0-9\%\?\=\&\:\/\\\.]+)["']/gi, function(full,match) {
    return full.replace(match, "http://my.cdn.com?url=" + escape(match))
});

//Outputs:

//"<body><div id='test'><script type='text/javascript' src='http://testScript.com'></script><img src='http://my.cdn.com?url=http%3A//www.google.com' /><img class='test1' src='http://my.cdn.com?url=http%3A//www.test.com' /><img src='http://my.cdn.com?url=http%3A//woot.com' class='test2' /></div></body>"
	var html = "<body><div id='test'><script type='text/javascript' src='http://testScript.com'></script><img src='http://www.google.com' /><img class='test1' src='http://www.test.com' /><img src='http://woot.com' class='test2' /></div></body>";

	html.replace(/<img [^>]*src=["']([A-Za-z0-9\%\?\=\&\:\/\\\.]+)["']/gi, function(full,match) {
	return full.replace(match, "http://my.cdn.com?url=" + escape(match))
	});

	//Outputs:

	//"<body><div id='test'><script type='text/javascript' src='http://testScript.com'></script><img src='http://my.cdn.com?url=http%3A//www.google.com' /><img class='test1' src='http://my.cdn.com?url=http%3A//www.test.com' /><img src='http://my.cdn.com?url=http%3A//woot.com' class='test2' /></div></body>"