$(document).ready(function()
{
	
	$("#firstpane p.list_head").click(function()
    {
		$(this).css({backgroundImage:"url(down.png)"}).next("div.list_body").slideToggle(300).siblings("div.list_body").slideUp("slow");
       	$(this).siblings().css({backgroundImage:"url(left.png)"});
	});
		$("#secondpane p.list_head").mouseover(function()
    {
	     $(this).css({backgroundImage:"url(down.png)"}).next("div.list_body").slideDown(500).siblings("div.list_body").slideUp("slow");
         $(this).siblings().css({backgroundImage:"url(left.png)"});
	});
});