[jQuery] IE bookmarklet problems

Has anyone run into issues using trying to insert jQuery into a page via
js/bookmarklet after the page has loaded? 


Thanks,
Chad


---- Bookmarket code

var d=document;
var
a=function(o){document.getElementsByTagName('head').item(0).appendChild(o)};

q=d.createElement('script');
q.type='text/javascript';
q.src='http://jquery.com/src/jquery-latest.js';
a(q);


--- Failing here

// If IE is used, use the excellent hack by Matthias Miller
        //
http://www.outofhanwell.com/blog/index.php?title=the_window_onload_problem_r
evisited
        } else if ( jQuery.browser.msie ) {
        
                // Only works if you document.write() it
                document.write("<scr" + "ipt id=__ie_init defer=true " + 
                        "src=//:><\/script>");
        
                // Use the defer script hack
                var script = document.getElementById("__ie_init");
                script.onreadystatechange = function() {
                        if ( this.readyState != "complete" ) return;
                        this.parentNode.removeChild( this );
                        jQuery.ready();
                };
        
                // Clear from memory
                script = null;
        
        // If Safari  is used
        }