$(document).ready(function()
		{
		//it will hide all th div's except first one.
		$('.msg_body:not(:first)').hide();
		//when the link is clicked content opens like shutter 
		$("a.linkclass").click(function()
		  {
			$('.msg_body').hide("fast");
			$($(this).attr("href")).show("slow");
		});	
	});