function setCoupon (){
	
	var val = 0;

	for( i = 0; i < document.checkout_payment.charity.length; i++ )
	{
		
		if( document.checkout_payment.charity[i].checked == true )
			val = document.checkout_payment.charity[i].value;
	
	}
	
	if(val == 'no_charity'){
		
		document.getElementById('comments2').value = '';
		document.getElementById('coupon').value = 'BEWUST';
		
		document.checkout_payment.sector_id.disabled = true;
		document.checkout_payment.charity_id.disabled = true;
		
	} else {
		
		document.getElementById('coupon').value = '';
		document.checkout_payment.sector_id.disabled = false;
		document.checkout_payment.charity_id.disabled = false;
		
	}
	
}


function setCharityField(charity_id)
{
	document.getElementById('coupon').value = '';
	document.getElementById('comments2').value = charity_id;
}