function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function calcTot ()
{
	var theTotal = 0;

	var i = 1;

	oQuant = document.getElementById("quant1");

	while (oQuant != undefined)
	{
		if (oQuant.value.length > 3 || !IsNumeric(oQuant.value))
		{
			oQuant.value = '';
			return;
		}
		else
		{
			oPrice = document.getElementById("price" + i);

			rowPrice = Math.round(oPrice.innerHTML*100);

			rowTotal = formatAmount((oQuant.value * rowPrice) / 100);

			document.getElementById("q" + i + "amount").innerHTML = rowTotal;

			theTotal += (oQuant.value * rowPrice);
		}

		i = i+1;

		oQuant = document.getElementById("quant" + i);
	}

	document.getElementById("totalamount").innerHTML = formatAmount(theTotal/100);
}

function formatAmount (amount)
{
	amount = "" + amount;
	if (amount.indexOf(".") == -1)
		amount += ".00";
	else if (amount.indexOf(".") == amount.length-2)
		amount += "0";

	return (amount);
}

function IsNumeric(sText)
{
	var ValidChars = "0123456789";
	for (i = 0; i < sText.length; i++) { 
		if (ValidChars.indexOf(sText.charAt(i)) == -1) {
			return false;
		}
	}
	return true;
}

function confirmShoppingCart ()
{
	if (document.getElementById("totalamount").innerHTML == "0.00")
	{
		alert ("Please fill in quantity number for at least one product");
		return false;
	}
	else
	{
		var theCartContent = "";
		var theCartDescription = "";

		var i = 1;

		oQuant = document.getElementById("quant1");

		while (oQuant != undefined)
		{
			quant = oQuant.value;

			if (quant == "")
				quant = 0;

			oPrice = document.getElementById("price" + i);
			oName = document.getElementById("pname" + i);

			theCartContent += "#" + quant + " " + oPrice.innerHTML;

			if (quant > 0)
			{
				if (theCartDescription != "")
					theCartDescription += ", ";
				if (quant > 1)
					theCartDescription += quant + "X ";
				theCartDescription += oName.innerHTML;
			}

			i = i+1;

			oQuant = document.getElementById("quant" + i);
		}

		oForm = document.getElementById("cartForm");

		oForm.cartContent.value = theCartContent;
		oForm.cartDescription.value = theCartDescription;
		oForm.cartTotal.value   = document.getElementById("totalamount").innerHTML;

		return true;
	}
}