JavaScript Validating Currency Amount
<p>I am trying to validate a currency value in a shopping cart so that if it is less than $50 it hides the check out button. I have used the same script for min order units and it worked, but not for currency. Code below</p>

<pre><code>&lt;script type="text/javascript"&gt;
setTimeout ("checkout()", 10 );
function checkout() {
    var tu = document.getElementById('cost').innerHTML;
    if (tu &lt; 50) {
        document.getElementById('buyvalidation').style.display='none';
        document.getElementById('no').style.display='block';
    } else {
        document.getElementById('buyvalidation').style.display='block';
    }
    setTimeout ( "checkout()", 10 );
}
&lt;/script&gt;
</code></pre>
