function setValues1() {
 var selectedIndex = document.forms["oneitem"]["indivbuy"];
  var selectedIndexValue = selectedIndex.value;
  var formToChange = document.forms["button1"];
  
  switch (selectedIndexValue) {
	case "0":
   	formToChange.elements["amount"].value = "0";
	formToChange.elements["item_name"].value = "Undefined product";
	break;
	
	case "1":
   	formToChange.elements["amount"].value = "10";
	formToChange.elements["item_name"].value = "Print 6x8";
	break;

	case "2":
  	formToChange.elements["amount"].value = "20";
	formToChange.elements["item_name"].value = "Print 8x10";
	break;
	
	case "3":
  	formToChange.elements["amount"].value = "1.60";
	formToChange.elements["item_name"].value = "Greeting card";
	break;
	
	case "4":
  	formToChange.elements["amount"].value = "3.50";
	formToChange.elements["item_name"].value = "Notebook";
	break;
	
	case "7":
  	formToChange.elements["amount"].value = "50";
	formToChange.elements["item_name"].value = "Digital image";
	break;
	
	}
}
   
   
    
   
   function updateQuantity1() {
	   var newQuantity = document.forms["oneitem"].elements["quantity1"].value;
	   if (newQuantity != parseInt(newQuantity, 10))
  {
    alert("Please enter a valid quantity");
  }
	   document.forms["button1"].elements["quantity"].value = newQuantity;
   }
   
      
   function updateQuantity2() {
	   var newQuantity = document.forms["set"].elements["quantity2"].value;
	   if (newQuantity != parseInt(newQuantity, 10))
  {
    alert("Please enter a valid quantity");
  }
	   document.forms["button2"].elements["quantity"].value = newQuantity;
   }
   
   function validate1() {
	   if (document.forms["oneitem"]["indivbuy"].value == 0) {
		   alert("You haven't selected a product type.  If your browser opens the Paypal shopping cart, please delete the item and try again.");
		   //don't go to Paypal.  Doesn't work in IE or Firefox
		   history.back();
	   } 
 }
 
  function validate2() {
	   if (document.forms["set"]["setbuy"].value == 0) {
		   alert("You haven't selected a product type.  If your browser opens the Paypal shopping cart, please delete the item and try again.");
		   //don't go to Paypal.  Doesn't work in IE or Firefox
		   history.back();
	   } 
 }