//=====================================================================||
//               NOP Design JavaScript Shopping Cart                   ||
//                                                                     ||
// For more information on SmartSystems, or how NOPDesign can help you ||
// Please visit us on the WWW at http://www.nopdesign.com              ||
//                                                                     ||
// Javascript portions of this shopping cart software are available as ||
// freeware from NOP Design under the GPL.  You must keep this comment ||
// unchanged in your code.  For more information contact               ||
// Scott@NopDesign.com                                                 ||
//                                                                     ||
// JavaScript Shop Module, V.4.1.0                                     ||
//=====================================================================||

//---------------------------------------------------------------------||
// FUNCTION:    CKquantity                                             ||
// PARAMETERS:  Quantity to                                            ||
// RETURNS:     Quantity as a number, and possible alert               ||
// PURPOSE:     Make sure quantity is represented as a number          ||
//---------------------------------------------------------------------||
function CKquantity(checkString) {
   strNewQuantity = "";

   for ( i = 0; i < checkString.length; i++ ) {
      ch = checkString.substring(i, i+1);
      if ( (ch >= "0" && ch <= "9") || (ch == '.') )
         strNewQuantity += ch;
   }

   if ( strNewQuantity.length < 1 )
      strNewQuantity = "1";

   return(strNewQuantity);
}


//---------------------------------------------------------------------||
// FUNCTION:    AddToCart                                              ||
// PARAMETERS:  Form Object                                            ||
// RETURNS:     Cookie to user's browser, with prompt                  ||
// PURPOSE:     Adds a product to the user's shopping cart             ||
//---------------------------------------------------------------------||
function AddToCart(thisForm) {
   iNumberOrdered = 0;
   iNumberOrdered = GetCookie("NumberOrdered");
   iNumberOrdered++;

   if ( iNumberOrdered > 12 )
      alert("I'm Sorry, your cart is full, please proceed to checkout.");
   else {
      if ( thisForm.ID_NUM == null )
         strID_NUM    = "";
      else
         strID_NUM    = thisForm.ID_NUM.value;
      
      if ( thisForm.QUANTITY == null )
         strQUANTITY  = "1";
      else
         strQUANTITY  = thisForm.QUANTITY.value;
      
      if ( thisForm.PRICE == null )
         strPRICE     = "0.00";
      else
         strPRICE     = thisForm.PRICE.value;
      
      if ( thisForm.NAME == null )
         strNAME      = "";
      else
         strNAME      = thisForm.NAME.value;
      
      if ( thisForm.SHIPPING == null )
         strSHIPPING  = "0.00";
      else
         strSHIPPING  = thisForm.SHIPPING.value;
      
      if ( thisForm.ADDITIONALINFO == null )
         strADDTLINFO = "";
      else
         strADDTLINFO = thisForm.ADDITIONALINFO[thisForm.ADDITIONALINFO.selectedIndex].value;

      dbUpdatedOrder = strID_NUM    + "|" + 
                       strQUANTITY  + "|" +
                       strPRICE     + "|" +
                       strNAME      + "|" +
                       strSHIPPING  + "|" +
                       strADDTLINFO;

      strNewOrder = "Order." + iNumberOrdered;
      SetCookie(strNewOrder, dbUpdatedOrder, null, "/");
      SetCookie("NumberOrdered", iNumberOrdered, null, "/");
      notice = strQUANTITY + " \"" + strNAME + "\" has been added to your order.";
      alert(notice);
   }
}


//---------------------------------------------------------------------||
// FUNCTION:    getCookieVal                                           ||
// PARAMETERS:  offset                                                 ||
// RETURNS:     URL unescaped Cookie Value                             ||
// PURPOSE:     Get a specific value from a cookie                     ||
//---------------------------------------------------------------------||
function getCookieVal (offset) {
   var endstr = document.cookie.indexOf (";", offset);

   if ( endstr == -1 )
      endstr = document.cookie.length;
   return(unescape(document.cookie.substring(offset, endstr)));
}


//---------------------------------------------------------------------||
// FUNCTION:    FixCookieDate                                          ||
// PARAMETERS:  date                                                   ||
// RETURNS:     date                                                   ||
// PURPOSE:     Fixes cookie date, stores back in date                 ||
//---------------------------------------------------------------------||
function FixCookieDate (date) {
   var base = new Date(0);
   var skew = base.getTime();

   date.setTime (date.getTime() - skew);
}


//---------------------------------------------------------------------||
// FUNCTION:    GetCookie                                              ||
// PARAMETERS:  Name                                                   ||
// RETURNS:     Value in Cookie                                        ||
// PURPOSE:     Retrieves cookie from users browser                    ||
//---------------------------------------------------------------------||
function GetCookie (name) {
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;

   while ( i < clen ) {
      var j = i + alen;
      if ( document.cookie.substring(i, j) == arg ) return(getCookieVal (j));
      i = document.cookie.indexOf(" ", i) + 1;
      if ( i == 0 ) break;
   }

   return(null);
}


//---------------------------------------------------------------------||
// FUNCTION:    SetCookie                                              ||
// PARAMETERS:  name, value, expiration date, path, domain, security   ||
// RETURNS:     Null                                                   ||
// PURPOSE:     Stores a cookie in the users browser                   ||
//---------------------------------------------------------------------||
function SetCookie (name,value,expires,path,domain,secure) {
   document.cookie = name + "=" + escape (value) +
                     ((expires) ? "; expires=" + expires.toGMTString() : "") +
                     ((path) ? "; path=" + path : "") +
                     ((domain) ? "; domain=" + domain : "") +
                     ((secure) ? "; secure" : "");
}


//---------------------------------------------------------------------||
// FUNCTION:    DeleteCookie                                           ||
// PARAMETERS:  Cookie name, path, domain                              ||
// RETURNS:     null                                                   ||
// PURPOSE:     Removes a cookie from users browser.                   ||
//---------------------------------------------------------------------||
function DeleteCookie (name,path,domain) {
   if ( GetCookie(name) ) {
      document.cookie = name + "=" +
                        ((path) ? "; path=" + path : "") +
                        ((domain) ? "; domain=" + domain : "") +
                        "; expires=Thu, 01-Jan-70 00:00:01 GMT";
   }
}


//---------------------------------------------------------------------||
// FUNCTION:    MoneyFormat                                            ||
// PARAMETERS:  Number to be formatted                                 ||
// RETURNS:     Formatted Number                                       ||
// PURPOSE:     Reformats Dollar Amount to #.## format                 ||
//---------------------------------------------------------------------||
function moneyFormat(input) {
   var dollars = Math.floor(input);
   var tmp = new String(input);

   for ( var decimalAt = 0; decimalAt < tmp.length; decimalAt++ ) {
      if ( tmp.charAt(decimalAt)=="." )
         break;
   }

   var cents  = "" + Math.round(input * 100);
   cents = cents.substring(cents.length-2, cents.length)
           dollars += ((tmp.charAt(decimalAt+2)=="9")&&(cents=="00"))? 1 : 0;

   if ( cents == "0" )
      cents = "00";

   return(dollars + "." + cents);
}


//---------------------------------------------------------------------||
// FUNCTION:    RemoveFromCart                                         ||
// PARAMETERS:  Order Number to Remove                                 ||
// RETURNS:     Null                                                   ||
// PURPOSE:     Removes an item from a users shopping cart             ||
//---------------------------------------------------------------------||
function RemoveFromCart(RemOrder) {
   if ( confirm("Click \"Ok\" to remove this product from your Order.") ) {
      NumberOrdered = GetCookie("NumberOrdered");
      for ( i=RemOrder; i < NumberOrdered; i++ ) {
         NewOrder1 = "Order." + (i+1);
         NewOrder2 = "Order." + (i);
         database = GetCookie(NewOrder1);
         SetCookie (NewOrder2, database, null, "/");
      }
      NewOrder = "Order." + NumberOrdered;
      SetCookie ("NumberOrdered", NumberOrdered-1, null, "/");
      DeleteCookie(NewOrder, "/");
      location.href=location.href;
   }
}


//---------------------------------------------------------------------||
// FUNCTION:    GetFromCart                                            ||
// PARAMETERS:  Null                                                   ||
// RETURNS:     Product Table Written to Document                      ||
// PURPOSE:     Draws current cart product table on HTML page          ||
//---------------------------------------------------------------------||
function GetFromCart( fShipping ) {
   if( fShipping )
      WriteToForm( true, fShipping );
   else
      WriteToForm( true, 0 );
}


//---------------------------------------------------------------------||
// FUNCTION:    WriteToForm                                            ||
// PARAMETERS:  Null                                                   ||
// RETURNS:     Product hidden fields Written to Document              ||
// PURPOSE:     Draws current cart product hidden fields on HTML form  ||
//              if bDisplay == true, shows cart output as HTML table   ||
//---------------------------------------------------------------------||
function WriteToForm( bDisplay, fShipping ) {
   iNumberOrdered = 0;
   fTotal         = 0;
   strTotal       = "";
   strShipping    = "";
   strOutput      = "";
   var sDesc = 'Ordered : ';
   
   var d = new Date();
   var mm = d.getMonth() + 1;
   var dd = d.getDate();
   var hh = d.getHours();
   var MM = d.getMinutes();
   var ss = d.getSeconds();

   if( mm < 10 )  mm = '0' + mm;
   if( dd < 10 )  dd = '0' + dd;
   if( hh < 10 )  hh = '0' + hh;
   if( MM < 10 )  MM = '0' + MM;
   if( ss < 10 )  ss = '0' + ss;
  
   iNumberOrdered = GetCookie("NumberOrdered");

   var sCartId= ' ' + d.getFullYear( ) + mm + dd + hh + MM + ss;
   document.write('<input type="hidden" name="cartId" value="' + sCartId + '">')
   
   if ( bDisplay )
      strOutput = "<table id=\"nopcart\"><tr>" +
                  "<th class=\"th1\">Reference</th>" +
                  "<th class=\"th2\">Title</th>" +
                  "<th class=\"th3\">Quantity</th>" +
                  "<th class=\"th4\">Price</th>" +
                  "<th class=\"th5\">Postage</th>" +
                  "<th class=\"th6\" id=remove>Remove Order</th></tr>";

   for ( i = 1; i <= iNumberOrdered; i++ ) {
      NewOrder = "Order." + i;
      database = "";
      database = GetCookie(NewOrder);

      Token0 = database.indexOf("|", 0);
      Token1 = database.indexOf("|", Token0+1);
      Token2 = database.indexOf("|", Token1+1);
      Token3 = database.indexOf("|", Token2+1);
      Token4 = database.indexOf("|", Token3+1);

      fields = new Array;
      fields[0] = database.substring( 0, Token0 );
      fields[1] = database.substring( Token0+1, Token1 );
      fields[2] = database.substring( Token1+1, Token2 );
      fields[3] = database.substring( Token2+1, Token3 );
      fields[4] = database.substring( Token3+1, Token4 );
      fields[5] = database.substring( Token4+1, database.length );

      fTotal     += (parseInt(fields[1]) * parseFloat(fields[2]) );
      fShipping  += (parseInt(fields[1]) * parseFloat(fields[4]) );
      strTotal    = moneyFormat(fTotal);
      strShipping = moneyFormat(fShipping);
      sDesc += fields[3] + ';  ';

      if ( bDisplay ) {
         strOutput += "<tr><td class=\"td1\">"  + fields[0] + "</td>";

         if ( fields[5] == "" )
            strOutput += "<td class=\"td2\">"  + fields[3] + "</td>";
         else
            strOutput += "<td class=\"td2\">"  + fields[3] + " - <I>"+ fields[5] + "</I></td>";

         strOutput += "<td class=\"td3\">"  + fields[1] + "</td>" +
                      "<td class=\"td4\">£" + moneyFormat(fields[2]) + "/each</td>";

         if ( parseFloat(fields[4]) > 0 )
            strOutput += "<td class=\"td5\">£" + moneyFormat(fields[4]) + "/each</td>";
         else
            strOutput += "<td class=\"td5\">One Price</td>";

         strOutput += "<td class=\"td6\"><input type=\"button\" value=\"  Remove  \"  onclick=\"RemoveFromCart("+i+")\" class=\"nopbutton\"></td></tr>";
      }

      strOutput += "<input type=\"hidden\" name=\"ID_"       + i + "\" value=\"" + fields[0] + "\">";
      strOutput += "<input type=\"hidden\" name=\"QUANTITY_" + i + "\" value=\"" + fields[1] + "\">";
      strOutput += "<input type=\"hidden\" name=\"PRICE_"    + i + "\" value=\"" + fields[2] + "\">";
      strOutput += "<input type=\"hidden\" name=\"NAME_"     + i + "\" value=\"" + fields[3] + "\">";
      strOutput += "<input type=\"hidden\" name=\"SHIPPING_" + i + "\" value=\"" + fields[4] + "\">";
      strOutput += "<input type=\"hidden\" name=\"ADDTLINFO_"+ i + "\" value=\"" + fields[5] + "\">";
   }

   if ( bDisplay ) {
      strOutput += "<tr><td class=\"noptotal\" colspan=\"2\">&nbsp;</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">Sub-Total</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">£" + strTotal + "</td>";
      strOutput += "</tr>";
      strOutput += "<tr><td class=\"noptotal\" colspan=\"2\">&nbsp;</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">Postage</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">£" + strShipping + "</td>";
      strOutput += "</tr>";
      strOutput += "<tr><td class=\"noptotal\" colspan=\"2\">&nbsp;</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">Total</td>";
      strOutput += "<td class=\"noptotal\" colspan=\"2\">£" + moneyFormat((fTotal + fShipping)) + "</td>";
      strOutput += "</tr>";
      strOutput += "</table>";

      strOutput += "<input type=\"hidden\" name=\"SUBTOTAL\" value=\"£" + strTotal + "\">";
      strOutput += "<input type=\"hidden\" name=\"SHIPPING\" value=\"£" + strShipping + "\">";
      strOutput += "<input type=\"hidden\" name=\"TOTAL\"    value=\"£" + moneyFormat((fTotal + fShipping)) + "\">";
      document.write('<input type="hidden" name="amount" value="' + moneyFormat((fTotal + fShipping)) + '">')
      document.write('<input type="hidden" name="desc"   value="' + sDesc + '">')      
   }

   document.write(strOutput);
   document.close();
}

//=====================================================================||
//               END NOP Design SmartPost Shopping Cart                ||
//                              V.4.0.0                                ||
//=====================================================================||