//if This chekc Box - Billling Address is same as Shipping - is 
// checked then run  this routine
function checkBilling()
{
	if(document.forms[1].chk_same_billing.checked)
	{  
   		document.forms[1].bill_po.value = document.forms[1].po.value;
   		document.forms[1].bill_address1.value = document.forms[1].required_address1.value;
   		document.forms[1].bill_address2.value = document.forms[1].address2.value;
   		document.forms[1].bill_town.value = document.forms[1].required_town.value;
   		document.forms[1].bill_state.value = document.forms[1].required_state.value	;
   		document.forms[1].bill_zip.value = document.forms[1].required_zip.value;
	}
	else
	{
		document.forms[1].bill_attn.disabled = false;
		document.forms[1].bill_po.disabled = false;
		document.forms[1].bill_org.disabled = false;
		document.forms[1].bill_address1.disabled = false;
		document.forms[1].bill_address2.disabled = false;
		document.forms[1].bill_town.disabled = false;
		document.forms[1].bill_state.disabled = false;
		document.forms[1].bill_zip.disabled = false;
	}
}


function validate_null(field)
{
	if ( field == null || field == "" )
	{
		return false;
	}
	if (field.value == "")
	{
		return false;
	}
return true;
}


function validate_numeric(field) 
{
	var valid = "0123456789"
	var ok = "yes";
	var temp;
	for (var i=0; i < field.value.length; i++) 
	{
		temp = "" + field.value.substring(i, i+1);
		if (valid.indexOf(temp) == "-1") ok = "no";
	}
	if (ok == "no") 
	{
		return false;
	}
	return true;
}