Auto Refresh Web Browser To Reflect Modified File?

Hello,

I have been developing websites using Apache on my laptop. Usually whenever I make a change to the local file I will manually refresh the webpage in the browser that I am using. Is it possible (with some extension, plugin or macro) in one of the major browsers to refresh the page automatically when I make a change to the local file? I was thinking of refreshing the page every X amount of seconds however that would be annoying for a few reasons. I would like the 'refresh' to occur only when I make a change to the local file.

Does anyone else have this problem? Anyone know of any things that can accomplish this?