function settaggio(){
var choose=window.open('cart/omaggio.asp','','scrollbars=yes,resizable=no,width=450,height=400,status=no,location=no,toolbar=no, menubar=no,top=0,left=0');
}

function prec(str) {
      searchWin = window.open(str,'prec1','scrollbars=yes,resizable=yes,width=500,height=350,status=no,location=no,toolbar=no');
}

function scheda(str) {
      searchWin = window.open(str,'prec2','scrollbars=yes,resizable=yes,width=760,height=450,status=no,location=no,toolbar=no');
}

function qta_onchange(fobj)
{
if( !digit_only(fobj, 'Quantita'))
{
return (false);
}
}
function digit_only(fobj, fieldname)
{
var checkOK = "0123456789";
var checkStr = fobj.value;
var allValid = true;
var decPoints = 0;
var allNum = "";
if (checkStr == "")
{
alert("Inserire un valore nel campo " + fieldname + "" + "\nProvide a value for " + fieldname + "");
fobj.focus();
return (false);
}
for (i = 0;  i < checkStr.length;  i++)
{
ch = checkStr.charAt(i);
for (j = 0;  j < checkOK.length;  j++)
if (ch == checkOK.charAt(j))
break;
if (j == checkOK.length){allValid = false;
break;
}
allNum += ch;
}
if (!allValid)
{
alert("Inserire solo valori numerici nel campo " + fieldname + "" + "\nDigit Only in " + fieldname + "");
fobj.focus();
return (false);
}
return (true);
}