var Items = new Item(null,null,0,0,0.0,'c');
var nullItem = new Item(null,null,0,0,0.0);
var currentNumItems = 0;
var credit = 0;
var paypal = 0;
var sale_total = 0;
var US_ship = 1;
var discount = 1;
var counted=0;
var weight_total=0;
var first;
var total = 0;
var email = " ";
var expired = new Date()
expired.setTime(expired.getTime() - 2000);
var expString = "; expires=" + expired.toGMTString();
//							   1	2	 3	   4	 5	   6	 7	   8	 9	   10	 11	   12	 13	   14	 15	   16	 17	   18	 19	   20	 21	   22	 23	   24	 25	   26	 27	   28	 29    30    31    32    33    34    35
var cost_per_pound = new Array(4.80,7.70,10.35,12.65,14.75,16.25,18.25,19.80,21.55,23.45,25.20,26.50,27.55,29.15,29.45,30.10,30.85,31.45,32.25,32.85,33.45,34.20,34.80,35.60,36.15,36.90,37.45,38.00,38.50,39.05,39.55,40.50,41.65,42.80,43.95);

function SetCookie(cook, value) {
 document.cookie = cook + "=" + escape(value);
}

function saveValue(item,item_num) {
  SetCookie("order"+item_num,item.page+"|"+item.name+"|"+item.points+"|"+item.number+"|"+item.weight+"|"+item.size+"|");
}

// returns value of cookie or null if cookie does not exist
function GetCookie(name) {
 var result = null;
 var myCookie = " " + document.cookie + ";";
 var searchName = " " + name + "=";
 var startOfCookie = myCookie.indexOf(searchName);
 var endOfCookie;
 if (startOfCookie != -1) {
  startOfCookie += searchName.length; // skip past name of cookie
  endOfCookie = myCookie.indexOf(";", startOfCookie);
  result = unescape(myCookie.substring(startOfCookie, endOfCookie));
 }
 return result;
}

function clearVars () {

	document.cookie = "checkout_total=0"+expString;
	currentNumItems = 0;
	sale_total = 0;
	US_ship = 1;
	discount = 1;
	counted=0;
	weight_total=0;
	Items = new Item(null,null,0,0,0.0,'c');
}

function doClear() {

	clearVars();
	ResetVars();
	self.main.body.location = "trade.html";
	first = 1;
}

function Item (page, name, points, number, weight, size) {

	this.page = page;
	this.name = name;
	this.points = points;
	this.number = number;
	this.weight = weight;
	this.size = size;
}

function ResetVars (where,page) {

	if ((top == window) && (where)) {
    	top.location.href = 'http://'+where+'.chuckpint.com?'+page;
	}
	updateWindow();
	updateTotals();
	if (self.main.body != null) {
	  if (self.main.body.document.forms[0] != null) {
		if ((self.main.body.document.forms[0].name == "checkout") || (self.main.body.document.forms[0].name == "auction")) {
			self.main.body.location.reload();
		}
	  }
	}
}

function doMessage(element,message) {
	alert(message);
    element.focus();
    element.value = "";
}

function updateTotals() {

	total = 0;
	sales = 0;
	set_or_bags = 0;
	weight_total = 0;
	negative = 0;
	commons = 0;
	uncommons = 0;
	for (i = 0;i < currentNumItems;i++) {
		if (Items[i].page == "sales") {
			if ((Items[i].name.indexOf("bag") == -1) && (Items[i].name.indexOf("Set") == -1)) {
				sales += Items[i].number * Items[i].points;
			}
			else {
				set_or_bags += Items[i].number * Items[i].points;
			}
		}
		else {
			if (Items[i].number < 0) {
				negative = 1;
			}
			if (Items[i].size == 'c') {
				commons += Items[i].number * 1;
			}
			if (Items[i].size == 'u') {
				uncommons += Items[i].number * 1;
			}
			total += Items[i].number * Items[i].points;
		}
		weight_total += Items[i].number * Items[i].weight;
	}
	sale_total = sales;
	if (total > 0) {
		if (!negative && ((commons > 49) || (uncommons > 24))) {
			sale_total += total / 5;
			discount = 0.80;
		}
		else {
			sale_total += total / 4;
			discount = 1;
		}
	}
	if (negative && (sales == 0) && (set_or_bags == 0)) {
	  shipping = 0;
	}
	else if (!US_ship) {
		shipping = -1;
	}
	else if (weight_total == 0) {
		shipping = 0;
	}
	else if (weight_total <= 1) {
		shipping = 0.80;
	}
	else if ((weight_total <= 13) && (sales == 0)) {
		shipping = 0.80 + parseInt(weight_total - 1) * 0.17;
	}
	else if (weight_total < 16) {
		shipping = 4.80;
	}
	else if {weight_total < (16*35)) {
		temp = parseInt((weight_total - 16) / 16);
		shipping = cost_per_pound[temp];
	}
	else {
		temp = parseInt((weight_total - 16) / 16) - 35;
		shipping = cost_per_pound[35] + temp;
	}
	sale_total = sale_total + set_or_bags;
	if (shipping > 0) {
		shipping += 1.00; // handling
		shipping += 0.50 + (sale_total * 0.03); //PayPal
		shipping = parseInt(shipping * 100) / 100.0;
		sale_total += shipping;
	}
	if (self.credit) {
		sale_total *= 1.10;
	}
	sale_total = parseInt(sale_total * 100 + 0.5)/100;
	weight_total = parseInt(weight_total * 10 + 0.5)/10;
	if (self.main.bottom != null) {
		with (self.main.bottom.document) {
			open("text/html","replace");
			if (currentNumItems == 0) {
				writeln('<HTML><HEAD>');
				writeln('<SCRIPT TYPE="text/javascript" SRC="frame.jar" LANGUAGE="JavaScript"> </SCRIPT>')
				writeln('</HEAD><BODY>');
				writeln('Send <B>');
				writeln("<a href=" + "mail" + "to:" + "web1" + "&#64;" + "chuckpint&#46;com" + ">" + "Chuck Pint" + "</a>");
				writeln('</B> a message if you want to buy or trade. &copy; 1998-2007.</BODY></HTML>');
			}
			else {
				writeln('<HTML><BODY><table border=0 CELLPADDING=0 WIDTH="100%"><tr align=center>');
				if ((sale_total == 0) && (total == 0)) {
					writeln("<TD>Even Trade</TD>");
				}
				else {
					if (total != 0) {
						writeln("<TD>Total points = "+total+"</TD>");
					}
					writeln("<TD>Total cost (shipping included) = $"+sale_total+"</TD>");
					if (US_ship) {
						if (shipping < 0) {
							writeln("<TD>Shipping cost = ???");
						}
						if (shipping == 0) {
							writeln("<TD>Shipping cost = Free");
						}
						else {
							writeln("<TD>Shipping cost = $"+shipping);
						}
					}
					else {
						writeln("<TD>shipping weight = "+weight_total+"oz.");
					}
					writeln("</TD>");
				}
				writeln('</tr></table></BODY></HTML>');
			}
			close();
		}
	}
	if (self.main.extra != null) {
		with (self.main.extra.document) {
			open("text/html","replace");
			if (currentNumItems != 0) {
				writeln('<HTML><HEAD>');
				writeln('<STYLE type="text/css">');
				writeln('<HTML><HEAD><STYLE type="text/css">');
				writeln('<!--');
				writeln('a:link {text-decoration: none}');
				writeln('a:visited {text-decoration: none}');
				writeln('a:active {text-decoration: none}');
				writeln('-->');
				writeln('</STYLE></HEAD>');
				writeln('<BODY><A HREF="checkout.html" TARGET="body"><IMG WIDTH="154" HEIGHT="16" SRC="images/checkout.gif"></A></BODY></HTML>');
			}
			close();
		}
	}
}

function doTotal(element,points,totals,threshold,weight,size) {

	if (element == null) {
		return;
	}
	trade_ok = (totals < 0) ? 1 : 0;
	if (totals >= 1000) {
		trade_ok = 1;
		totals -= 1000;
	}
	if (totals == -1000) {
		totals = 0;
	}
	if (totals == -2000) {
		totals = -2;
	}
	if (element.value != "") {
		amount = parseInt(element.value);
		amount = amount + " ";
		amount = amount.substring(0,amount.length - 1);
		if (amount.length != element.value.length) {
			doMessage(element,'Only enter integer numbers.');
			return;
		}
		if ((element.value < 0) && (!trade_ok)) {
			doMessage(element,'I will not take any in trade.');
			return;
		}
		i = totals - threshold;
		if ((element.value < 0) && (i > element.value) && (points < 100)) {
			doMessage(element,'I will not take more than '+(-i)+' in trade.');
			return;
		}
		if ((element.value > 0) && (element.value > totals)) {
			doMessage(element,'I do not have that many to '+((element.form.name == 'sales')?'sell.':'trade.'));
			return;
		}
	}
	for (i = 0;i < currentNumItems;i++) {
		if ((Items[i].name == element.name) && (Items[i].page == element.form.name)) {
			if (element.value != 0) {
				Items[i].number = element.value;
				saveValue(Items[i],i);
			}
			else {
				for (; i < (currentNumItems - 1);i++) {
					Items[i] = Items[i+1];
					saveValue(Items[i],i);
				}
				element.value = "";
				currentNumItems--;
			}
			break;
		}
	}
	if (i == currentNumItems) {
		if (element.value == 0) {
			element.value = "";
		}
		else {
			Items[currentNumItems] = new Item(element.form.name,element.name,points,element.value,weight,size);
			// saveValue(Items[currentNumItems],currentNumItems);
			currentNumItems++;
		}
	}
	updateTotals();
}

function returnAmount(page, name) {
	for (j = 0;j < currentNumItems;j++) {
		if ((Items[j].page == page) && (Items[j].name == name)) {
			return(Items[j].number);
		}
	}
	return("");
}

function updateWindow() {
    if (self.main.body == null) {
		return;
	}
	with (self.main.body.document) {
		if (forms[0] == null) {
			return;
		}
		for (i = 0;i < forms[0].elements.length;i++) {
			if (forms[0].elements[i].type == "text") {
				forms[0].elements[i].value = returnAmount(forms[0].name,forms[0].elements[i].name);
			}
		}
	}
	updateTotals();
}

if (first == 0) {
	doClear();
}