Originally Posted by you
The screen is refers to the konqueror or mozillad firefox screen.
... I am trying to make sense out of this statement.
There is a computer monitor sitting in front of you.
In front of the monitor, there is a space for displaying pictures. This is called a "screen".
Inside the screen, you can see the workspace part of the computers GUI.
The part of the GUI which everything goes on top of is called a "desktop". KDE stands for "Kool Desktop Environment"... get it?
When you open a folder from your desktop (like the home folder), you will see a window open up on your desktop. The window is controlled by a program called "konqueror" whose job is to manage files, display the content of files, and browse web pages. When you open your home folder, for eg, you see a window with a bunch of icons in it. In this case, konqueror is acting as a file manager.
Each window you open is like a little screen, only with a title and some toolbars and some decorations around the outside.
These windows can be minimized, maximized, resized, and moved around.
Moving a window around with a mouse is called "dragging".
So - what happens when you drag a window?
What is the problem??
You have stated that when you move a screen, you get a shadow.
You have told me that the "screen" refers to konqueror or mozilla.
I am guessing you mean the windows that konqueror or mozilla use when they are running. But that is a guess only - you haven't actually told me! You also haven't told me what you mean by "shadow". I have been asking for this information since post #2. Without this information, nobody can help you.