// ** Eric Toledo Shopping Cart **

var itemNum = new Array();
var itemDescr = new Array();
var itemCost = new Array();
var itemQt=new Array();
var extCst=new Array();

//***Parse Cookie Data and call Write Cart ***

function itemsOrdered() {
 if (getCookieData("Scart")) {
 substr0 = getCookieData("Scart")
 cLen = substr0.length
 offset0 = substr0.indexOf("@")
 counter = substr0.substring(0,offset0)
 j = 0
 for (i=1; i<=counter; i++) {
  offsetq = eval('offset' + j + '');
  substrq = eval('substr' + j + '');
  eval('ind' + i + ' = offsetq + 1');
  eval('substr' + i + ' = substrq.substring(ind' + i + ',cLen)');
  eval('offset' + i + ' = substr' + i + '.indexOf("^")');
  eval('item' + i + ' = substr' + i + '.substring(0,offset' + i + ')');
  eval('catInd' + i + ' = item' + i + '.indexOf("`")');
  eval('itemCat' + i + ' = item' + i + '.substring(0,catInd' + i + ')');
  eval('catqt' + i + ' = item' + i + '.indexOf("*")');
  eval('qtcat' + i + ' = item' + i + '.substring((catInd'+i+'+1),catqt' + i + ')');
  eval('descrInd' + i + ' = item' + i + '.indexOf("~")');
  eval('itemDes' + i + ' = item' + i + '.substring((catqt' + i + ' + 1),descrInd' + i + ')');
  eval('itemPr' + i + ' = item' + i + '.substring((descrInd' + i + ' + 2),offset' + i + ')'); 
  eval('orderDetail(i,itemCat' + i + ',qtcat' + i + ',itemDes' + i + ',itemPr' + i + ')');
  j++
 }
 writeCart();
 }
}

// **Item Array to load into cart.**

function orderDetail(seq,num,qt,descr,cost) {
 itemNum[seq] = num
 itemQt[seq] = qt
 itemDescr[seq] = descr
 itemCost[seq] = cost
}

// ** Function to write the shopping cart details **
// ** into the table on the shopping cart page.


function writeCart() {
  var ordFrm = '<div align="center"><font face=arial size=2><b>&nbsp</b></font></div><br>'
  ordFrm += '<form name="shopCart"><table border=0 width=600>'
  ordFrm += '<tr bgcolor=#988F82><td align=center><font face=arial size=1 color=#ffffff>ITEM</font></td><td align=center><font face=arial size=1 color=#ffffff>ITEM DESCRIPTION</font></td><td align="center"><font face=arial size=1 color=#ffffff>ITEM PRICE</font></td><td align="center"><font face=arial size=1 color=#ffffff>ORDER QTY</font></td><td align="center"><font face=arial size=1 color=#ffffff>EXTENDED COST</font></td><td align="center"><font face=arial size=1 color=#ffffff>REMOVE</font></td></tr>'
  for (i = 1; i <= counter; i++) {
   extCst[i]=eval(itemCost[i]*itemQt[i])
   ordFrm += '<tr><td><font face=arial size=1 color=#000000>' + itemNum[i] + '</font></td>'
   ordFrm += '<td><font face=arial size=1 color=#000000>' + itemDescr[i] + '</font></td>'
   ordFrm += '<td align="center"><font face=arial size=1 color=#000000>$' + itemCost[i] + '</font></td>'
   ordFrm += '<td align="center"><font face=arial size=1 color=#000000>' + itemQt[i] + '</font></td>'
   ordFrm += '<td align="center"><font face=arial size=1 color=#000000>$' + fix(extCst[i]) + '</font></td>'
   ordFrm += '<td align=center><font face=arial size=1><a class=body href="javascript:clearIt('+i+')">Remove</a></font></td></tr>'
  }
  ordFrm += '<tr><td align=right colspan=6><br><br><font face=arial size=1 color=#000000>SUB TOTAL: </font>'
  ordFrm += '<input type="text" name="subtotal" size=6 maxlength=6 value="0.00" '
  ordFrm += 'onFocus="document.shopCart.subtotal.blur()"></td><td>&nbsp; </td></tr>'
  ordFrm += '<tr><td colspan=6 align=right>'
  ordFrm += '<a class=body href="checkout.html"><font face=arial size="2">'
  ordFrm += 'Checkout</font></a>'
  ordFrm += ' &nbsp; &nbsp; <input type="reset" '
  ordFrm += 'value="Empty Shopping Cart" onClick=killCart()>'
  ordFrm += '</form></td></tr></table>'
  document.write(ordFrm);
  document.close();
}

// ** Function to delete a line item upon user request. **

function clearIt(num) {
 itemNum[num] = "item"
 rewriteCookie(num)
}

// **Function to rewrite the cookie when the user **
// **deletes a line item from the shopping cart. **

function rewriteCookie(num) {
 dataUpdate = ""
 for (i=1; i<=counter; i++) {
   if (itemNum[i] != "item") {
    dataUpdate += itemNum[i] + '`' + itemQt[i] + '*' + itemDescr[i] + '~$' + itemCost[i] + '^'
   }
 }
 counter = counter - 2
 cookData = dataUpdate
 setCookieData("Scart", cookData, expdate.toGMTString())
 history.go(0)
}


// **** Display subtotal.****

function update() {
 if (getCookieData("Scart")) {
  var sub_total = 0;
  for (i=1; i<itemNum.length; i++)
   eval('sub_total += parseFloat(extCst[' + i + ']);');
  document.shopCart.subtotal.value= fix(sub_total);
 }
}

function fix(num) {
 var decplaces = 2
  var str = "" + Math.round (eval(num) * Math.pow(10,decplaces))
  while (str.length <= decplaces) {
   str = "0" + str
  }
  var decpoint = str.length - decplaces
  return str.substring(0,decpoint) + "." + str.substring(decpoint,str.length);
 return str;
}

// **Function to clear the shopping cart.**

function killCart() {
 killCookie("Scart")
 history.go(-1)
}