function Calculate()
{
	var qty;
	var print;
	var printare; 
	var total;

	qty=document.getElementById('txtcantitate').value ;
	if (!qty) return;
	qty=parseInt(qty);
	
	print=0;
	(document.getElementById("pfata").checked) ? print=0.25 : print=0.35;
	total=0; total=print*qty;
	 
	printare=new Array('0.06','0.12','0.2','0.06');
	for(i=0; i<printare.length; i++)
	{
		if(document.preturi.txtprintare[i].checked) total+=printare[i]*qty;
	}
	
	total=total.toFixed(2);
	document.getElementById('total').innerHTML= total;
}

function validQty()
{
	var qty;
	qty=document.getElementById('txtcantitate').value ;
	qty=parseInt(qty);
	if (qty<200 || document.getElementById('txtcantitate').length<1 || !qty)
	{
		alert("txtcantitate minima 200 bucati")
		document.getElementById('txtcantitate').value=200;
		Calculate();
	}
}

function checkedfata()
{
	document.getElementById("lverso").checked=false;
	Calculate();
}

function checkedverso()
{
	document.getElementById("lfata").checked=false;
	Calculate();
}