Is there any way of easily refreshing a website coded in G(Vim)?

I realized that I waste 10% of my time changing windows between Vim and Firefox.

Alt + Tab + F5 (and sometimes a get the wrong window).

Is there a way of making this task easier?

I thought of the following:

• Embending vim to firefox (I think it is impossible).
• Making a Vim shortcut which sends me to Firefox's window.

Any suggestions?

Technically, I guess this ain't proper answer, but You might benefit from these tools.

For Chrome - try LiveReload.
For Firefox - try XRefresh.