diff --git a/main.hsp b/main.hsp
index ce8c725..f56fd64 100644
--- a/main.hsp
+++ b/main.hsp
@@ -58,26 +58,30 @@
 			buf = ""
 			GetWindowText hWindow, VarPtr (buf), 256
 
-			If (IsWindowVisible (hWindow) != False) And (StrLen (buf) != 0) {
-				hWindows.windowCnt = hWindow
-				GetWindowRect hWindow, VarPtr (windowRects.0.windowCnt)
+			If IsWindowVisible (hWindow) {
+				If StrLen (buf) != 0 {
+					hWindows.windowCnt = hWindow
+					GetWindowRect hWindow, VarPtr (windowRects.0.windowCnt)
 
-				windowCnt++
+					windowCnt++
+				}
 			}
 
 			hWindowBefore = hWindow
 		Loop
 
 		If GetKey2 (KEY_MOUSE_L) {
-			If moving {
-				nizikaX = LimitF (mouseX - offsetX, -NIZIKA_LEFT, gInfo_dispX - NIZIKA_RIGHT)
-				nizikaY = LimitF (mouseY - offsetY, Null, gInfo_dispY - NIZIKA_BASE)
-			}
-			Else {
-				moving = True
+			If gInfo_act = SCREEN_MAIN {
+				If moving {
+					nizikaX = LimitF (mouseX - offsetX, -NIZIKA_LEFT, gInfo_dispX - NIZIKA_RIGHT)
+					nizikaY = LimitF (mouseY - offsetY, Null, gInfo_dispY - NIZIKA_BASE)
+				}
+				Else {
+					moving = True
 
-				offsetX = Double (mouseX - nizikaX)
-				offsetY = Double (mouseY - nizikaY)
+					offsetX = Double (mouseX - nizikaX)
+					offsetY = Double (mouseY - nizikaY)
+				}
 			}
 		}
 		Else: If moving {
@@ -97,9 +101,13 @@
 			base = gInfo_dispY
 
 			Repeat windowCnt
-				If (windowRects.0.cnt <= nizikaX + (NIZIKA_WIDTH - NIZIKA_LEFT)) And (nizikaX + NIZIKA_LEFT < windowRects.2.cnt) {
-					If (nizikaY + NIZIKA_BASE <= windowRects.1.cnt) And (windowRects.1.cnt < base) {
-						base = windowRects.1.cnt
+				If windowRects.LEFT.cnt <= nizikaX + (NIZIKA_WIDTH - NIZIKA_LEFT) {
+					If nizikaX + NIZIKA_LEFT < windowRects.RIGHT.cnt {
+						If nizikaY + NIZIKA_BASE <= windowRects.TOP.cnt {
+							If windowRects.TOP.cnt < base {
+								base = windowRects.TOP.cnt
+							}
+						}
 					}
 				}
 			Loop