deselecting input button text while dragging any element

i have a two section tags 

 

in the first section  tage i have some input type buttons & diagrams  (like rectangle triangel etc which i drag drop to section two.)

the point is : when i select any diagram  and the text of the input buttons also goes with mouse while dragging.(but actually i doen't droped it just dragged with mouse ).

 you can see this  here    http://prntscr.com/f6mwf7

 

thanks for your reply.