$(document).ready(function()
		  {
		      //hide the all of the element with class msg_body
		      $(".more_body").hide();
		      //toggle the component with class msg_body
		      $(".more_link").click(function()
					   {
					       $(this).next(".more_body").slideToggle(300);
					       $(this).hide();
					   });
		  });