<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.8.3.js'></script>
<script type='text/javascript'>
$(window).load(function(){
$(document).ready(function () {
$('.botton3').click(doSomething);
$('.botton2').click(doTrigger);
});
function doTrigger() {
$('.botton3').trigger('click');
}
function doSomething() {
console.log('boo!');
}
});
</script>
</head>
<body>
<div class="botton1">
<h2>button1</h2>
</div>
<div class="botton2">
<h2>button2</h2>
</div>
<div class="botton3">
<h2>button3</h2>
</div>
</body>
</html>