<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>
<html xmlns=”http://www.w3.org/1999/xhtml”>
<head>
<title>Jquery – Check/Uncheck all checkboxes</title>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<meta name=”robots” content=”INDEX,FOLLOW” />
<meta name=”description” content=”jquery – using javascript framework – check all checkbox” />
<script type=”text/javascript” src=”http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js”></script>
<script type=”text/javascript”>
function jqCheckAll(id_controller, id_container) {
    $(“#” + id_container + “:checkbox”).attr(“checked”, $(“#” + id_controller).is(“:checked”));
}
</script>
<style type=”text/css”>
.head {background-color:gray}
</style>
</head>

<body>
<div id=”container”>
<table border=”1″ cellpadding=”1″>
    <tr class=”head”><th><input type=”checkbox” id=”controller” onclick=”jqCheckAll(this.id, document.getElementById(‘container’));” title=”Check/Uncheck me to get effect” /></th><th>Element</th><th>Value</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-1″ /></th><th>checkbox</th><th>item-1</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-2″ /></th><th>checkbox</th><th>item-2</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-3″ /></th><th>checkbox</th><th>item-3</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-4″ /></th><th>checkbox</th><th>item-4</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-5″ /></th><th>checkbox</th><th>item-5</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-6″ /></th><th>checkbox</th><th>item-6</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-7″ /></th><th>checkbox</th><th>item-7</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-8″ /></th><th>checkbox</th><th>item-8</th></tr>
    <tr><th><input type=”checkbox” name=”checkbox[]” value=”item-9″ /></th><th>checkbox</th><th>item-9</th></tr>
</table>
</div>
</body>

</html>

Demo: http://huypv.net/blog/upload/data/jquery-check-al-checkbox.htm