simple jquery ajax success

HTML

<div id="btn">click me</div>

CSS

#btn{background:#888; width: 200px;height:100px}

JavaScript

$.ajax({
    url: "www.google.pt",
    error: function(data){
       alert('a: '+data);
    },
    success: function(data){
        alert('b: '+data);
    },
    timeout: 1000 // sets timeout to 3 seconds
});