code: public void setPseudoFixedToolbars(boolean value) {
          boolean oldVal = this.pseudoFixedToolbars;
          this.pseudoFixedToolbars = value;
          if (oldVal != this.pseudoFixedToolbars && content != null && content.isAttached()) {
              if (this.pseudoFixedToolbars) {
                  centerContent();
                  initWindowResize();
              } else {
                  centerContent();
              }
          }
      }
docs: If content is short or scrollable (see {@link JQMPage#setContentHeightPercent(double)}),
  we can get "fixed" header and footer without using CSS position: fixed (it's not working
  quite good in mobile browsers). Just setPseudoFixedToolbars(true) and footer's position will
  be calculated to be at the bottom of the page.