$(document).ready(function(){
        $("#moduleForm1486894 .description b").addClass("msg_head");
		$("#moduleForm1486894 .description div").addClass("msg_body");

     });
	 
	 $(document).ready(function(){
	 //hide the all of the element with class msg_body
	 $(".msg_body").hide();
	 //toggle the componenet with class msg_body
	 $(".msg_head").click(function(){
	 $(this).next(".msg_body").slideToggle(200);
	 });
	});