input value + plus button
<p>Have input text with value of 0 and two buttons plus and minus.
the weird stuff is when click the button, the increment is by 2 instead of 1...?
2 - 4 - 6...... what is wrong with the script? </p>

<pre><code>$(function() {
   $(".PLUS").click(function(){
   var $this = $(this);
   var quantity = parseInt($this.siblings(".InputText").val()) +1;
   $(this).siblings(".InputText").val(quantity);
   });
});
</code></pre>
