It takes log time and can't work in jquery-1.6.2.js , jquery-1.6.2.min.js

It work successfully in jquery-1.6.1.js , jquery-1.6.1.min.js

Source Code :

<script language="javascript" type="text/javascript" src="jquery-1.6.2.js"></script>

<input id="A" type="button" value="TEST1" >

<input id="B" type="button" value="TEST2" >

<div onClick="go();">Click it! </div>

<script>

function go() {

$(":button").attr('disabled', true);

$(":button").attr('disabled', false);

}

</script>