$(document).ready(function()

{
//default first tab opens
$('.menu_body').hide();
//default first tab opens END
	//slides the element with class "menu_body" when paragraph with class "menu_head" is clicked 
	$("#firstpane h2.menu_head").click(function()
    {
		$(this).css({backgroundImage:"url(down.png)"}).next("div.menu_body").slideToggle(300).siblings("div.menu_body").slideUp("slow");
       	$(this).siblings();
	});
	//slides the element with class "menu_body" when mouse is over the paragraph
	$("#secondpane h3.menu_head").click(function()
    {
	     $(this).css({backgroundImage:"url(down.png)",backgroundColor:""}).next("div.menu_body").slideToggle(300).siblings("div.menu_body").slideUp("slow");
         $(this).siblings();
	});
});