<style>
#box  {
    width:80px;
    margin: 0 auto;
    text-align: center;
    float:left;
}
</style>
<script>
var i;
var woodwidthtext = ["1.5 นิ่ว","2 นิ้ว", "2.5 นิ้ว", "3 นิ้ว"];
for (i = 0; i < woodwidthtext.length; i++) {
                "<div id = 'box'>" + document.write(woodwidthtext[i]) + "</div>" + "<br/>";
                }
</script>