/*
   VISIBILITY
*/


.vis          { visibility: visible; }
.vis-hidden   { visibility: hidden; }
.vis-collapse { visibility: collapse; }

.vis-bf-vis {   backface-visibility: visible; }
.vis-bf-hid {   backface-visibility: hidden; }

/*
    Text that is hidden but accessible
    Ref: http://snook.ca/archives/html_and_css/hiding-content-for-accessibility
*/

.clip {
  position: fixed !important;
  _position: absolute !important;
  clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
  clip: rect(1px, 1px, 1px, 1px);
}