Farmatique

<div id="field1">
    <button type="button" id="sub" class="sub">-</button>
    <input type="text" id="1" value="0" class="field" />
    <button type="button" id="add" class="add">+</button>
</div>

$('.add').click(function () {
    $(this).prev().val(+$(this).prev().val() + 1);
});
$('.sub').click(function () {

Maksold

<?xml version="1.0"?>
<layout>
    <default>
        <!--Root/Default Layouts-->
        <reference name="root">
            <!--Appending Block-->
            <block type="page/html_breadcrumbs" name="breadcrumbs" as="breadcrumbs"/>
        </reference>
 
        <!--CSS and JS Files-->