// Used in all pages to submit a form and optionally set a hidden 
// form varaible called 'navigate' to direct navgiation
function submitForm(formName, navigateValue) {
	if (navigateValue != null && navigateValue != "") {
		document.forms[formName].navigate.value = navigateValue;
	}
    document.forms[formName].submit();
}

// function
function different_billing() {

	if(document.getElementById('ddFirst').value == 1) {
		document.getElementById('billing_add').style.display = '';
		document.getElementById('billing_add1').style.display = '';
		document.getElementById('billing_add2').style.display = '';
		document.getElementById('billing_add3').style.display = '';
		document.getElementById('billing_add4').style.display = '';
		document.getElementById('billing_add5').style.display = '';
		document.getElementById('ddFirst').value = 2;
	} else if (document.getElementById('ddFirst').value == 2) {	
		document.getElementById('billing_add').style.display = 'none';
		document.getElementById('billing_add1').style.display = 'none';
		document.getElementById('billing_add2').style.display = 'none';
		document.getElementById('billing_add3').style.display = 'none';
		document.getElementById('billing_add4').style.display = 'none';
		document.getElementById('billing_add5').style.display = '';
		document.getElementById('ddFirst').value = 1;
	}

}