a bookmarklet for emule search selected text

ed2k search.js

//bookmarklet
//javascript:(function(a){var b,c=a.selection,a=a.activeElement,d=top.getSelection,e=a&&a.selectionEnd;e?b=a.value.substring(a.selectionStart,e):d&&(b=d()+"");c&&(b=c.createRange().text);b&&(location="ed2k://|search|%s|/".replace(/%s/,b))})(document);

//origin code
(function(doc){
  var text,
    IEselection = doc.selection,
    activeEle = doc.activeElement,
    getSelection = top.getSelection,
    selectionEnd = activeEle && activeEle.selectionEnd;
  selectionEnd ? 
    (text = activeEle.value.substring(activeEle.selectionStart, selectionEnd)) : //input / textarea
    getSelection && (text = getSelection() + '');
  IEselection && (text = IEselection.createRange().text);
  if(text){
    location = 'ed2k://|search|%s|/'.replace(/%s/, text);
  }
})(document)