title: Track cursor movement of all the visitors on a web site
body: <p>I know that there are many analytics tools available to track cursor movement of all the visitors on a website - these tools basically track the movement by giving a Javascript code which need to be pasted on the website. They all are quite expensive</p>
  <p>I am trying to develop it for my own website - a tracking code installed on my website and the cursor movements viewed on some other page/website.</p>
  <p>I have seen in Google docs wherein if many people open the doc. different cursor are visible in different colors each corresponding to a particular visitor. I want to develop similar functionality for website.</p>
  <p>I have tried to Google but I am not able to find a starting point from where I can start developing it.</p>
  <p>Please guide me.</p>