To hide a div when the user clicks outside of it, try to run the following code
Example
Live Demo
<!DOCTYPE html> <html> <body> <script> window.onload = function(){ var hideMe = document.getElementById('hideMe'); document.onclick = function(e){ if(e.target.id !== 'hideMe'){ hideMe.style.display = 'none'; } }; }; </script> <div id="hideMe">Click outside this div and hide it.</div> </body> </html>