var deliverychecked = false;

function cartaction(action, pid, qty) 
{
  if (deliverychecked)
  {  

    // addtocart() - adds product to the shopping cart
    // PARAM - pid : product ID
    var r = document.getElementById("Remarks");
    var Rmks = (typeof(r.value)=='undefined') ? " " : r.value;

    if (action=='ADD')
    {
      var elts = document.body.getElementsByTagName("select")
      var ThisElt = 'opt' + pid;
      var Options = '';

      for(i=0;i<elts.length;i++)
      { 
    	// If there is an option for this item, find the option value
    	if (elts[i].id.indexOf(ThisElt)>-1) 
    	{ 
    		var catid = elts[i].id.substr((elts[i].id.indexOf(ThisElt) + ThisElt.length + 1));
    		Options += "&Options[" + catid + "]=" + elts[i].value;
    	}
      }

    } else if (action=='CQTY')
    {
      var Options = ""; 
    }
    atc = new AJAX();

    atc.open("POST", "ajax_modcart.php", true);
    atc.onreadystatechange=function()
    {
      if (atc.readyState==4) 
      {
  	document.getElementById("shoppingcart").innerHTML=atc.responseText;
      }
    }

    atc.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    atc.send("action="+action+"&products_id="+pid+"&quantity="+qty+"&Remarks="+Rmks+Options);

  } else { alert("Please enter the postal code of the delivery address first."); deliverypc.focus(); }
}

function CheckTime(dpc){
	ct = new AJAX();
	ct.open("POST", "ajax_service.php", true);
	ct.onreadystatechange=function(){
		if (ct.readyState==4){
			pcStatus.innerHTML = "";
			if (ct.responseText=="error") { 
				Availability_Msg.innerHTML="Please enter a valid postal code.";
				deliverychecked = false;
			} else {
				Availability_Msg.innerHTML=ct.responseText;
				deliverychecked = true;
			}
		}
	}
	ct.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	pcStatus.innerHTML = "<img src='images/spinner.gif' />";
	ct.send("deliverypc="+dpc);
}