@namespace url(http://www.w3.org/1999/xhtml);
/*
  fmo: hot-linked img max size
  (prevent blown margins)
*/
@-moz-document domain("forums.mozillazine.org") {

img[src^="http"]:not([src*="mozillazine.org"]) {
  max-width:  600px !important; /*typical size*/
  max-height:  600px  !important; /*seldom needed*/
  border:  3px double blue  !important; /*eye-catcher*/
}

img[src^="http"]:not([src*="mozillazine.org"]):active { 
  position: fixed !important;
  top: 0px !important; left: 0px !important;
  max-width: 99.66%  !important; 
  max-height: 99.4% !important;
  border: 2px solid purple !important;
}

a > img[src^="http"]:not([src*="mozillazine.org"]) { 
  border: 3px double Red !important; 
}
a > img[src^="http"]:not([src*="mozillazine.org"]):active {
  position: relative !important; 
  border: 3px double Red !important; 
}

}