Just say... (ajax problem)

[Anicho]

I want to get something from an external link.

var topic = "4";
var domain = "http://" + location.hostname+location.pathname;
pageOpen.open("GET",domain+"?showtopic="+topicId,true);

But I want to change this to

var domain = "http://mywebsite.com/index.php?showtopic=4";
pageOpen.open("GET",domain,true);

This is just an example...
Won't work, what am I doing wrong (I'm a novice ajax'er and javascripter)

[seco]

please be more specific on what you want to retrieve from the external link.

[Anicho]

I want to know how I can use ajax to get information (cross-site) I think it's called