function bb(msg)  {
     window.status = msg
       return true
}
var sw = screen.AvailWidth
var distX = sw-770
function tabla() {
var params = 'screenX='+distX+',screeny=10,left='+distX+',top=10,'
params += 'locationbar=no,menubar=no,resizable=yes,'
params += 'personalbar=no,favorites=no,toolbar=no,'
params += 'width=750,height=550,scrollbars=yes,statusbar=yes,status=yes'
window.open('tabla.html','win',params)
}