[gengar003]

I'm by no means experienced, but I think I might no how to help.

1. on the main site, make a seperate .html page, for purposes of this example, test.html with the following contents:

<script>

function openpopup(){
var popurl="http://yourmainsite.com/vb/"
winpops=window.open(popurl,"","width=800,height=60 0,toolbar,location,directories ,status,scrollbars,menubar,resizable,")
}

openpopup()

</script>

what that does is automatically goes to your main site 1 second after the page loads.

2. on your backup board, put this code, in the footer template:

<iframe name="iframe" src="http://yourmainsite.com/yourdir/test.html" frameborder="0" border="0" scrolling="no" width="0" height="0" MARGINWIDTH=0
MARGINHEIGHT=0 noresize></iframe>

what this does is places in invisible Iframe at the bottom of your backup board, and fills the iframe with a javascript code that will popup your main forums page. thus, if your backup forum is hosted on a DIFFERENT server than your main one, when the main one is down, the little Iframe will not load, and members will not see the main forums popped up, but if it IS up, then they'll be redirected.

also, change "http://yourmainsite.com/yourdir/test.html" to the location of the testing page, and change "http://yourmainsite.com/vb/" to your main forums directory.