made various deep changes to the way the site is built.
went away from document.open/write/close
towards DOM with createElement, innerHTML, etc.
however - wrapped the whole thing into some functions that replace the
old ones
document.open => clear
document.write => write
document.writeln = > writeln
document.close => draw
this now provides full support for firefox (yay!)
also implemented some minor issues (confirmation box when leaving page,
etc).
have fun discovering them :-)