html - Javascript Hover Issue on an Image -


i'm trying create effect javascript.

effect:

when click on menu show active image symb1.png. following code:

css:

<style>     li{display:inline;padding:0 10px; z-index:-1;}     .red{ background-image:url('symb1.png'); background-repeat:no-repeat;} </style>

html in body tag

<ul id="menu">     <li><a href="#" class="red" onclick="selected(this)">menu</a></li>     <li><a href="#" onclick="selected(this)">menu 1</a></li>     <li><a href="#" onclick="selected(this)">menu 2</a></li> </ul>

finally javasript code before closing html body tag:

<script>     function selected(obj){         var lilist = document.getelementbyid('menu');         var alist = lilist.getelementsbytagname('a');         (i=0; i<alist.length; i++ )         {            alist[i].classname="";         }         obj.classname="red";     } </script>

it's working fine text menu, menu 1, menu 2 etc. if put image instead of text doesn't work. doesn't show active image. why happen?

update:

<html> <head> <style type="text/css"> li{display:inline;padding:0 10px; z-index:-1;} .red{ background-image:url(symb1.png); background-repeat:no-repeat;} </style> </head> <body> <ul id="menu"> <li><a href="#" class="red">menu</a></li> <li><a href="#" onclick="selected(this)">menu 1</a></li> <li><a href="#" onclick="selected(this)">menu 2</a></li> </ul> <script> $('ul li a').click(function(){  $('ul li a').removeclass('red'); $(this).addclass('red');  }); </script> </body> </html>

not sure if open jquery here simple solution. also, here jsfiddle can see in action:

jquery:

$(document).ready(function() {     $('ul li a').click(function(){         $('ul li a').removeclass('red');         $(this).addclass('red');      }); });

the rest of code stays same. of course you'll need include jquery library in head of document:

<script src="//http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>

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