function calculatePrice() 
{
  var desc;
  if (document.buyoptions.frame[1].checked == true)  // frame1=yes
  {
    if (document.buyoptions.mat[0].checked == true) // mat0=none
    {
      frame = frameNoMatPrice;
    }
    else 
    {
      frame = framePrice;
    }

    desc = "Yes";
  }
  else
  {
    frame = 0.0;
    desc = "No";
  }

  var numColors = document.buyoptions.color.length;
  if (document.buyoptions.color[numColors-1].checked == true)  //color2=original
  {
    art = originalPrice;
    document.paypal.os0.value="Black and White Original Artwork";
  }
  else if (document.buyoptions.color[numColors-2].checked == true)  //color1=original
  {
    art = printPrice;
    document.paypal.os0.value="Black and White Limited Edition Print";
  }
  else
  {
    art = printPrice;
    document.paypal.os0.value="Color Limited Edition Print";
  }

  desc += " / Matting: ";
  if (document.buyoptions.mat[0].checked == true)
  {
    mat = 0.0;
    desc += "None";
  }
  else if (document.buyoptions.mat[1].checked == true)
  {
    mat = matPrice;
    desc += "Black";
  }
  else
  {
    mat = matPrice;
    desc += "White";
  }

  if (art == SOLD)
  {
    document.buyoptions.price.value = SOLD;
    document.buyoptions.price.className = "soldout";
    document.paypal.amount.value = 0.01;
    document.paypal.os0.value = "This item is unfortunately sold out.";
    document.paypal.os1.value = "";
  }
  else
  {
    var n = new NumberFormat(art+frame+mat);
    n.setCurrency(false);
    var total = n.toFormatted();

    document.buyoptions.price.value = total;
    document.buyoptions.price.className = "price";
    document.paypal.amount.value = total;
    document.paypal.os1.value = desc;
  }

}

function block(e) 
{
  return false;
}

function isAvail()
{
  if (document.buyoptions.price.value == SOLD)
  {
    alert("This item is unfortunately sold out.");
    return false;
  }
  else
  {
    return true;
  }
}