Dinamically include jQuery

[javascript]
if(!(window.jQuery && window.jQuery.fn.jquery == ’1.3.2′))
{
var s = document.createElement(‘script’);
s.setAttribute(‘src’, ‘http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js’);
s.setAttribute(‘type’, ‘text/javascript’);
document.getElementsByTagName(‘head’)[0].appendChild(s);
}
[/javascript]