JQuery :: Toggle Function - Check Clicked One And Activate Next Image

I just started with Jquery:
<script type="text/javascript">
$(document).ready(function() {
$('#desperation input[type=image]').attr('disabled', true).fadeTo
("fast", 0.10);
$('#1').attr('disabled', false).fadeTo("fast", 0.70);
});
$('#1').toggle(
function () {
$('#1').click(function() {
$('#1').fadeTo("fast", 1.00).attr('checked', true);
$('#2').attr('disabled', false);
});},
function () {
$('#1').click(function() {
$('#1').fadeTo("fast", 0.70).attr('checked', false);
$('#2').attr('disabled', true);
});});
</script>
<div id="skill">
<form action="javascript:void(null);" method="post"
enctype="application/x-www-form-urlencoded" id="skillplanner"
name="skillplanner" >
<fieldset id="desperation"><legend>Freetrader Skills: Desperation</
legend>
<input type="image" src="files/icons/underdog.png" id="1"></input>
<input type="image" src="files/icons/dump_guns.png" id="2"></input>
<input type="image" src="files/icons/desperation_fire.png" id="3"></input>
<input type="image" src="files/icons/rum_ration.png" id="4"></input>
<input type="image" src="files/icons/hasty_fire.png" id="5"></input>
</fieldset></form></div>
The problem is with the toggle function. On click it should "check" clicked one and activate next one. Function doesnt work and I dont have a clue....