Ajax :: Executing Script Returned By XMLHttpRequest?

I was wondering if it was possible to execute javascript returned by ajax (XMLHttpRequest)? I can see that the script is returned by it doesn't execute. Here is what it returns. I can see the output but when I click on it nothing happens.

Code:
<script type="text/javascript">
function hi(name){
var latBox = document.getElementById("myinfo");
latBox.innerHTML = "<div>Greetings: " + name + "</div>";
}
</script>
<p onClick="hi('hi');">Math.random = " + Math.random() + "</p>