mouse postion problems

Questions & Answers
1 
          var rect1 = Rect (0, 220, 100, 50);
          var rect2 = Rect (200, 220, 100, 50);
          var rect3 = Rect (300, 220, 100, 50);
          var aa ;

      function Update () 
       {
         if (rect1.Contains(Input.mousePosition))
         {
         Debug.Log("khkkkh"); 
         aa=1;
         }

        if(rect2.Contains(Input.mousePosition))
        {
        Debug.Log("ggggg"); 
        aa=1;
        }

       if(rect3.Contains(Input.mousePosition))
       {
       Debug.Log("jjjjj"); 
       aa=1;
       }
    }
    function OnGUI()
     {
       GUI.Button (rect1, "BUTTON1");
   GUI.Button (rect2, "BUTTON2");
   GUI.Button (rect3, "BUTTON3");

   if(aa == 1)
   {
   GUI.Button(Rect(200,200,100,50),"OVER THE BUTTON");
   }

     }

Three buttons are there when mouse is over the any button it should show the message in gui.button my problem is when using if (rect1.Contains(Input.mousePosition)) when i keep mouse over the button no message is displayed when i keep the mouse some distance below the button message is showing i want to use both mouse over with gui elements simultaneously any answer.

2

GUI coordinate system starts from top left corner of the screen

but mouse coordinate system on screen start form bottom left corner of the screen

try this

var newVec = Vector2(Input.mousePosition.x, Screen.height - Input.mousePosition.y);

if (rect1.Contains(newVec))...

change Input.mousePosition with newVec everywhere