服务器端Web抓取/导航解决方案（支持JavaScript）

I need to do server side web scraping/navigation, including sites with JavaScript, and I need a solution that would work on a hosting plan - I dont have my own server. I came across python/pyside/pyqt4 - this would work perfectly/allow me to navigate sites like a headless browser. However I don't know if this would be possible to install on a remote server/host... I need to do server side web scraping/navigatio