Hiya working demo of examples http://jsfiddle.net/zM5Vj/ or http://jsfiddle.net/zM5Vj/show/
Hope this helps, + will be shown when the accordion collapses, where as is in the case of an open accordion.
there is good!
JQuery, + - , . , . , , !
$(function(){
$('#accordion .fullChild>a.opener').text('+').addClass('box');
$('#accordion .opener').click(function() {
if($(this).text() == "-") {
$(this).text("+");
}
else {
$('#accordion .opener').text("+");
$(this).text("-");
}
});
});