Popup window dancing issue

In my application, there was once an issue where in after continuous movement of mouse over a popup window, the mouse down and mouse up event is not triggered.

In such a case, even if the mouse has not been clicked, on mouse movement, the pop up window also moves along with it. This is the dancing popup issue. :) . This term has been coined by me. 

So what should you do in such a case?
This is what I did:

1. Check for the button of the mouse clicked
2. Check for the event: 

    window.event.button  
   

3. If the left button is clicked, then the value = 1
4. If right button is clicked, then the value = 3

Now this worked for me, only in IE 9 and below.

For chrome I checked the below value to be equal to 1:

 event.buttons  

Only if these values equaled 1, then the popup window was moved, i.e. the x and y coordinates along with top and left values were changed.

So together, we can frame the check in the following way:

 var mouseClickValue = (Util.isIE() ? window.event.button : evt.buttons);  
 if (mouseClickValue) {  
   // move the pop up window  
 }  

I will add the fix required for IE 11 and above, very soon. 
Watch this blog for more :)

Hope this fix helps!! Happy coding!!