$(document).ready(function() {	

 //Reassign the LI
 $('#tabMenu > li:first').addClass('selected');
  $('.boxBody img').hide();
  
 $('.boxBody img:first').addClass('show');
  $('.boxBody img:first').show();


  //Get all the LI from the #tabMenu UL
  $('#tabMenu > li').mouseenter(function(){
        
    //remove the selected class from all LI    
    $('#tabMenu > li').removeClass('selected');
    
    //Reassign the LI
    $(this).addClass('selected');
    
    //Hide all the DIV in .boxBody
    $('.boxBody img').fadeOut('1500');
	  
    //Look for the right DIV in boxBody according to the Navigation UL index, therefore, the arrangement is very important.
    $('.boxBody img:eq(' + $('#tabMenu > li').index(this) + ') ').fadeIn('1500');
    
    
  });


});