function checkemail()
{
	//document.getElementById('invoice').style.visibility='visible';
	if (document.getElementById('chk_emailme').checked==true) //it tests it before it changes the checked status
	{
	   document.getElementById('chk_invoiceme').checked='true';
	}
}
function checkinvoice()
{
	//document.getElementById('invoice').style.visibility='visible';
	if (document.getElementById('chk_invoiceme').checked==true) //it tests it before it changes the checked status
	{
	   document.getElementById('chk_emailme').checked='true';
	   //document.getElementById('invoice').style.visibility='hidden';
	}
	//else document.getElementById('invoice').style.visibility='visible';
}