function chkbox1()
{
	
	if (document.all('optbackup2').checked==true)
	document.all('optbackup2').checked=false;
	
	if (document.all('optbackup1').checked==false)
		alert ('With this Option we will keep a copy of your product license information if you need it re-sent to you for any reason in certain amount of months up from the day of your purchase.');
	
}

function chkbox2()
{
	if (document.all('optbackup1').checked==true)
	document.all('optbackup1').checked=false;
	
	if (document.all('optbackup2').checked==false)
		alert ('With this Option we will keep a copy of your product license information if you need it re-sent to you for any reason in certain amount of months up from the day of your purchase.');
	
}

function showcdrom(rad)
{
	switch(rad)
	{
		case 1:
		{
		document.all('cdromoption1').style.display='none';	
		document.all('cdromoption2').style.display='none';
		break;
		}
		case 2:
		{
		document.all('cdromoption1').style.display='';	
		document.all('cdromoption2').style.display='';	
		break;
		}
		default:
		{
		document.all('cdromoption1').style.display='none';	
		document.all('cdromoption2').style.display='none';
		}
	}
	
}

function showvolume()
{
	if (document.all('volumeoption').style.display=='none')
		document.all('volumeoption').style.display='';
	else
		document.all('volumeoption').style.display='none';
	
}