function validateme()
{
	if (document.cart_quantity.txt_12.value == '')
	{
		alert('Please specify a Ship / Pickup Date');
		return false;
	}
	else if (getCheckedValue(document.cart_quantity.txt_13) == '')
	{
		// something else is wrong
		alert('Please wait for the Ship / Pickup Methods to load and specify a Ship / Pickup Method');
		return false;
	}
	// If the script gets this far through all of your fields
	// without problems, it's ok and you can submit the form

	return true;
}

function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}