diff --git a/src/skilltree/skillTree.js b/src/skilltree/skillTree.js
index 57fe430..d2c8356 100644
--- a/src/skilltree/skillTree.js
+++ b/src/skilltree/skillTree.js
@@ -36,7 +36,7 @@ function SkillTree(p) {
                 case "┬":context.beginPath();context.moveTo(x*p.gridSizeX+(padX)-p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+p.gridSizeY+p.gridPaddingY);context.stroke();context.beginPath();context.moveTo(x*p.gridSizeX+(padX)+p.gridSizeX+p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+p.gridSizeY+p.gridPaddingY);context.stroke();break;
                 case "┴":context.beginPath();context.moveTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)-p.gridPaddingY);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX+p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.stroke();context.beginPath();context.moveTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)-p.gridPaddingY);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)-p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.stroke();break;
                 case "┼":context.beginPath();context.moveTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)-p.gridPaddingY);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX/2,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+p.gridSizeY+p.gridPaddingY);context.moveTo(x*p.gridSizeX+(padX)-p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.lineTo(x*p.gridSizeX+(padX)+p.gridSizeX+p.gridPaddingX,Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY)+(y%2===1?p.halflineheight:p.gridSizeY)/2);context.stroke();break;
-                case "□":context.fillRect(x*p.gridSizeX+(padX), Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY), p.gridSizeX, y%2===1?p.halflineheight:p.gridSizeY);break;
+                case "□":context.clearRect(x*p.gridSizeX+(padX), Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY), p.gridSizeX, y%2===1?p.halflineheight:p.gridSizeY);context.fillRect(x*p.gridSizeX+(padX), Math.ceil(y/2)*p.gridSizeY+Math.ceil((y-1)/2)*p.halflineheight+(padY), p.gridSizeX, y%2===1?p.halflineheight:p.gridSizeY);break;
                 default:
             }
             x++