$(function() {
    $("#img_switch").toggle(
        
				function () {
	    $("#img_switch").attr("src","../../uin/images/closed.gif");
            $("#adv_ex1").hide();
		},
       function () {				
           $("#img_switch").attr("src","../../uin/images/opened.gif");
           $("#adv_ex1").show();
						
							
        }       
    )

});