bookmarklet to show the referrer for the current page

wherefrom.js

javascript:var str='';function avm_getL(h){var a=document.createElement('a');a.href=h;return a.hostname}function gup(){var results=document.referrer.toString().match(/q=([A-Z\%0-9]+)/i);if(!results)return'';else return results[1]}function avm_cb(d){var div=document.createElement('div');div.id='avm_ref_div';if(document.referrer==''){div.innerHTML='You came here independently, i.e. by typing in the URL or from an external application'}else{div.innerHTML='You came here from ';var a=document.createElement('a');a.href=(str==='Google')?'http://google.com/search?q='+gup():document.referrer;if(!d.query.results){a.innerHTML=(str)?str:'Unknown'}else{a.innerHTML=d.query.results.title}a.setAttribute('style','color:#ddd; text-decoration:underline;');div.appendChild(a)}div.innerHTML+='.';div.setAttribute('style','position:fixed; top:0; left:0; opacity:0.8; background-color:#222; color:#eee; font: 9pt \'Helvetica Neue\',Arial,sans-serif; padding:2px 4px;');document.body.appendChild(div)}if(avm_getL(document.referrer)==='www.google.com'){str='Google';avm_cb({'query':{'results':{'title':'Google'}}})}else{var yql='select * from html where url=\''+document.referrer+'\' and xpath=\'//title\'';var s=document.createElement('script');s.type='text/javascript';s.src='http://query.yahooapis.com/v1/public/yql?q='+encodeURIComponent(yql)+'&format=json&callback=avm_cb';document.head.appendChild(s)};void 0;

My code works in Firefox (4) and Chrome (11), but I replaced my code with your changes anyway. Doesn't really matter as far as as the code is concerned, but if it works in one more thing, why not.