function changePlanterSize(option)
{
  	document.getElementById('prod_price').value=option.value;
		
	var sel_status = document.getElementById('plantersize').selectedIndex;
	document.getElementById('prod_title').value= '<?php echo $prodname; ?>' + '-' + document.getElementById('plantersize').options[sel_status].text;
	document.getElementById('prod_id').value= document.getElementById('prod_id').value + '-' + document.getElementById('plantersize').options[sel_status].text;
}