Save & then redisplay web page

[stockton]

I have a working web application (intranet) that currently successfully displays a web page with necessary data and subsiquently, using JavaScript, prints a slightly reformatted version of the page.

My user has now asked me to perform another action between the above mentioned action which effectively means the web page gets overwritten.

Is there a way for me to save this web page complete with the data displayed thereon and after performing the required action redisplay the original page? 

[gurroa]

If you can use javascript then save body.innerHTML

  var origpage = document.body.innerHTML;

  function Revert() {
    document.body.innerHTML = origpage;
  }

[stockton]

Thank you. That looks easy enough.