title: get a browser rendered html+javascript
body: <p>I need a comandline tool (or Javascript/PHP, but i think commandline is the one way) for render and get the rendered content of URL, but the important its I need to renderer the Javascript not only the CSS/Html/images.</p>
  
  <p>For example command like: "renderengine <a href="http://www.google.es" rel="noreferrer">http://www.google.es</a> outputfile.html" and the content of the web (parsed html and javascript executed) isa saved in outputfile.html.</p>
  
  <p>I need this because i need to take the result of a full javascript website like grooveshark, the site load all using javascript/ajax and the crawlers dont find nothing, only basic HTML empty template (because is loaded after using ajax/javscript)</p>
  
  <p>Exists any browser engine for linux with support to Javascript (for example V8) that output the result for save in files?</p>