lib/polyfills/dialog-polyfill.js
function(backdropZ, dialogZ) {
      this.backdrop_.style.zIndex = backdropZ;
      this.dialog_.style.zIndex = dialogZ;
    }
function(backdropZ, dialogZ) {
      this.backdrop_.style.zIndex = backdropZ;
      this.dialog_.style.zIndex = dialogZ;
    }
function ( backdropZ , dialogZ ) { this . backdrop_ . style . zIndex = backdropZ ; this . dialog_ . style . zIndex = dialogZ ; }
Sets the zIndex for the backdrop and dialog.

@param {number} backdropZ
@param {number} dialogZ
Sets the zIndex for the backdrop and dialog .