// Anti Boss ...............................................................
["mousedown", "mouseup", "dragstart"].forEach(function(type) { gBrowser.mPanelContainer.addEventListener(type, function(e) { antiBoss(e) }, false) });
this.onDestroy = function() {
["mousedown", "mouseup", "dragstart"].forEach(function(type) { gBrowser.mPanelContainer.removeEventListener(type, function(e) { antiBoss(e) }, false) });
};

function antiBoss(event) {
     switch ( event.type ) {
              case "mousedown": {
                    if ( event.button == 0 ) this.leftButtonDown = true; // если нажать ЛКМ

                    if ( event.button == 2 && this.leftButtonDown ) { // если нажать ПКМ
                         event.preventDefault();
                         event.stopPropagation();
     
                         this.leftButtonDown = false;
                         this.rightButtonDown = true;

                         // свернуть Firefox ....
                         var intervalID = setInterval(function( ) {
                         if ( this.rightButtonDown ) return;   
                              window.minimize(); 
                              clearInterval(intervalID);
                              document.getElementById("contentAreaContextMenu").hidePopup();
                              }, 50)
                         }
                         break;
              }
              case "mouseup": {
                    if ( event.button == 0 ) this.leftButtonDown = false; // если отпустить ЛКМ
                    if ( event.button == 2 ) this.rightButtonDown = false;                
                         break;
              }
              case "dragstart": { this.leftButtonDown = false }
     }   
 
};