javascript - Jquery empty() or remove() wont work -

i working on little game practicing jquery , php. clicking on right spot you'll go next question or have fail. checking right answer use img(img of question) usemap

        <img id="questions" src="../img/items/question1.png" style="height: 450px;width: 700px;" usemap="#result">         <map name="result">         </map> 

as can see, map has no area's. add in script:

$(document).ready(function(){   var score = 0;    var answer1 = '<area class="true" shape="circle" coords="145, 175, 40" href="#">';   var entireimg = '<area class="false" shape="rect" coords="0, 0, 700, 450" href="#">';    $(answer1).appendto('map');   $(entireimg).appendto('map');    $('.true').click(function(){       score++;       $('#questions').attr({src: "../img/items/question2.png"});    });   $('.false').click(function(){       $('#questions').attr({src: "../img/items/fail.png"});       $('.notes').show();   }); }); 

if got right answer add new area right answer location each question. problem got is; cant remove previous answer area form. what tried far:

changing variable other location add to map:

$('.true').click(function(){     score++;     $('#questions').attr({src: "../img/items/question2.png"});     answer1 = '<area class="true" shape="circle" coords="200, 300, 40" href="#">';     $(answer1).appendto('map'); }); 

remove var map:

$('.true').click(function(){     score++;     $('#questions').attr({src: "../img/items/question2.png"});     $('answer1').remove(); }); 

remove added element:

$('.true').click(function(){     score++;     $('<area class="true" shape="circle" coords="145, 175, 40" href="#">').remove();         }); 

and empty value (and empty value , append 'empty' value again).

non of work, , knowledge have far (witch not much) cant figure out (already spent 2 hours googling around).

i put game online on links: http://i333180.iris.fhict.nl/demo/pages/index.php

regards

since want remove element you're clicking on, use:

$(".true").click(function() {     score++;     $(this).remove(); });