try something like this..
<a href="#" onClick="MM_openBrWindow('path.html','optionspop','toolbar=no,location=no,menubar=no,scrollbars=no,status=yes,resizable=no,width=750,height=405')"
with the corrosponding </a>
. The above is all one continuous line and no spaces between the ()
Of course your path will be very different and I'm using javascript as well. The MM_openBrWindow is a function.
As for your second issue. Use a onClose (similar to the onClick above) event to call another page.
Hope it helps