var handlerBasketRemove = function(e) {
    if ("BASKET"==Left(e.dragObject.domNode.id, 6)){
      var strSplit = e.dragObject.domNode.id.split("_");
      var Id = Right(strSplit[0], strSplit[0].length-6);
      var strBasket = "";

      strBasket = getCookie("Basket"); 

      if(strBasket==null||strBasket.length<1){
        //Cannot be null really as we must have something in it in order to drag over to this remove product from basket handler!
      }else{    

        var j=dojo.json.evalJSON("[" + strBasket + "]");
        strBasket = "";
        for (var i = 0 ; i < j.length ; i++) { 

          if(j[i]["Id"]==Id){
            //We check to see if quantity is 1. If so, remove product completely otherwise just decrement quantity by 1.
            if(parseInt(j[i]["QTY"]) > 1){
              strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + (parseInt(j[i]["QTY"])-1) + "\"},";          
            }
          }else{
            strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + j[i]["QTY"] + "\"},";
          }
        }        
        strBasket = Left(strBasket, strBasket.length-1)
      }

      setCookie("Basket", strBasket );

      $("formBasket_strBasket").value = "[" + strBasket + "]";

      window.location="basket.aspx";

    }
  }

  function removeFromBasket(Id) {

      var strBasket = "";
       
      strBasket = getCookie("Basket"); 

      if(strBasket==null||strBasket.length<1){
        //Cannot be null really as we must have something in it in order to drag over to this remove product from basket handler!
      }else{    

        var j=dojo.json.evalJSON("[" + strBasket + "]");
        strBasket = "";
        for (var i = 0 ; i < j.length ; i++) { 

          if(j[i]["Id"]==Id){
            //We check to see if quantity is 1. If so, remove product completely otherwise just decrement quantity by 1.
            if(parseInt(j[i]["QTY"]) > 1){
              strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + (parseInt(j[i]["QTY"])-1) + "\"},";          
            }
          }else{
            strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + j[i]["QTY"] + "\"},";
          }
        }        
        strBasket = Left(strBasket, strBasket.length-1)
      }

      setCookie("Basket", strBasket );

      if(strBasket.length > 0){$("formBasket_strBasket").value = "[" + strBasket + "]";}else{$("formBasket_strBasket").value = "";}

      getBasket();


  }

  var handlerdropBasket = function(e) {
    if ("PRODUCT"==Left(e.dragObject.domNode.id, 7)){
      var strSplit = e.dragObject.domNode.id.split("_");
      var Id = Right(strSplit[0], strSplit[0].length-7);
      addtobasket(Id);
    }
  }

  function addtobasket(addtobasket_strProductGUID){
    var stocklevel = 0;

    if(addtobasket_strProductGUID.length>0){

      dojo.io.bind({
      url: "getStockLevel.aspx?strproductguid=" + addtobasket_strProductGUID + "&temp=" + Math.random(),
           load: function(type, data, evt){

              var j=dojo.json.evalJSON(data);          
                            
              stocklevel = j[0]["StockLevel"];
              doaddtobasket(stocklevel, addtobasket_strProductGUID);

           },
           error: errorHandler
      });
    }

  }

  function doaddtobasket(StockLevel, Id){
      var strBasket = "";   

      //deleteCookie("Basket");
      strBasket = getCookie("Basket"); 

      if(strBasket==null||strBasket.length<1){
        strBasket = "{\"Id\":\"" + Id + "\",\"QTY\":\"1\"}";
      }else{
    
        var bolFound = false;
        //We now see if this product already exists in the basket in order to increase the quantity

        var j=dojo.json.evalJSON("[" + strBasket + "]");
        strBasket = "";
        for (var i = 0 ; i < j.length ; i++) { 

          if(j[i]["Id"]==Id){

            // We now have to check to see if there is enough stock
            if(StockLevel >= parseInt(j[i]["QTY"])+1){
              strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + (parseInt(j[i]["QTY"])+1) + "\"},";          
            }else{
              strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + j[i]["QTY"] + "\"},";
              alert("Sorry, but we only have " + StockLevel +" of this book in stock at the moment.");
            }
            bolFound = true;
          }else{
            strBasket = strBasket + "{\"Id\":\"" + j[i]["Id"] + "\",\"QTY\":\"" + j[i]["QTY"] + "\"},";
          }
        }
        if(bolFound==false){
          strBasket = strBasket + "{\"Id\":\"" + Id + "\",\"QTY\":\"1\"},";
        }
        strBasket = Left(strBasket, strBasket.length-1)
      }

      setCookie("Basket", strBasket );

      if(strBasket.length > 0){$("formBasket_strBasket").value = "[" + strBasket + "]";}else{$("formBasket_strBasket").value = "";}

      getBasket();

  }

  function getBasket(){
    var intSubTotal = 0;
    var intPostageCost = 0;
    var intBooks = 0;
    if($("formBasket_strBasket").value.length>0){
      dojo.io.bind({
      url: "getBasket.aspx?temp=" + Math.random(),
           formNode: document.getElementById("formBasket"),
           load: function(type, data, evt){

              var j=dojo.json.evalJSON(data);          
              var strReturn = "";
              for (var i = 0 ; i < j.length ; i++) { 
                if(parseInt(j[i]["QTY"]) > 1){var strQTY = " (" + j[i]["QTY"] + ")";}else{strQTY = "";}
                  intBooks = intBooks + j[i]["QTY"];
                  strReturn = strReturn + "                          <tr> \n"
                  strReturn = strReturn + "                            <td align=\"center\"><img id=\"BASKET" + j[i]["Id"] + "\" src=\"productimages/mini/" + j[i]["Image"] + ".png\" border=0 style=\"cursor : hand;\" alt=\"" + j[i]["Title"] + "\" onclick=\"window.location='viewProduct.aspx?product=" + j[i]["Id"] + "';\"></td>\n"
                  strReturn = strReturn + "                            <td bgcolor=\"#FFE4D3\"> \n"
                  strReturn = strReturn + "                              <table width=\"140\" border=\"0\" cellspacing=\"0\" cellpadding=\"3\">\n"
                  strReturn = strReturn + "                                <tr> \n"
                  strReturn = strReturn + "                                  <td align=\"left\" class=\"categoryCellout\"><a href=\"viewProduct.aspx?product=" + j[i]["Id"] + "\" class=\"categoryLink\">" + Left(j[i]["Title"],12) + "...</a>" + strQTY + "</td>\n"

                  if(bolCheckout==false){
                    strReturn = strReturn + "                                  <td align=\"right\" class=\"categoryCellout\" rowspan=\"2\"><a href=\"Javascript:removeFromBasket('" + j[i]["Id"] + "');\" onMouseOut=\"MM_swapImgRestore()\" onMouseOver=\"MM_swapImage('removebtn11','','images/column_features/remove-item_ro.gif',1)\"><img name=\"removebtn11\" border=\"0\" src=\"images/column_features/remove-item.gif\" width=\"19\" height=\"19\"></a></td>\n"
                  }

                  strReturn = strReturn + "                                </tr>\n"
                  strReturn = strReturn + "                                <tr> \n"
                  strReturn = strReturn + "                                  <td align=\"left\" class=\"categoryCellout\">" + j[i]["Price"] + "</span></td>\n"
                  strReturn = strReturn + "                                </tr>\n"
                  strReturn = strReturn + "                              </table>\n"
                  strReturn = strReturn + "                            </td>\n"
                  strReturn = strReturn + "                          </tr>\n"

                intSubTotal    = intSubTotal + j[i]["intSubTotal"];
                if (intPostageCost < j[i]["intPostageCost"]){intPostageCost = j[i]["intPostageCost"];}
              }

              if(intBooks > 1){
                 intPostageCost = intPostageCost + ((intBooks-1)*1.5);
                 if(intPostageCost > 9.99){intPostageCost = 9.99;}
              }
              intSubTotal = intSubTotal + intPostageCost;

              if(strReturn.length > 0){

                if(bolCheckout==false){
                  strReturn = "<table border=0 cellspacing=1 cellpadding=0 class=\"bodyText\">" + strReturn + "<tr><td align=middle colspan=3><br><strong>Delivery will be <span style=\"color:#FF4000\">" + intPostageCost.toFixed(2) + "</span><br>Current total is <span style=\"color:#FF4000\">" + intSubTotal.toFixed(2) + "</span></strong></td></tr></table><table border=\"0\" cellspacing=\"5\" cellpadding=\"0\"><tr><td width=\"19\"><a href=\"basket.aspx\" onMouseOut=\"MM_swapImgRestore()\" onMouseOver=\"MM_swapImage('gobtn3','','images/column_features/go_btn_ro.gif',0)\"><img name=\"gobtn3\" border=\"0\" src=\"images/column_features/go_btn.gif\" width=\"22\" height=\"22\" alt=\"Checkout\"></a></td><td class=\"bodyText\"><a href=\"basket.aspx\" onMouseOut=\"MM_swapImgRestore()\" onMouseOver=\"MM_swapImage('gobtn3','','images/column_features/go_btn_ro.gif',0)\" class=\"bodyLink\">Check out</a></td></tr></table>";
                }else{
                  strReturn = "<table border=0 cellspacing=1 cellpadding=0 class=\"bodyText\">" + strReturn;
                }
              }
              
              document.getElementById("divBasket").innerHTML = strReturn;
              document.getElementById("divScrollBasket").innerHTML = strReturn;


              for (var i = 0 ; i < j.length ; i++) { 
                //new dojo.dnd.HtmlDragSource(document.getElementById("BASKET" + j[i]["Id"]), "BASKET");
              }

           },
           error: errorHandler
      });
    }else{
      document.getElementById("divBasket").innerHTML = "<center>Drag products here to<br>add them to your basket</center><br><br>";
      document.getElementById("divScrollBasket").innerHTML = "<center>Drag products here to<br>add them to your basket</center><br><br>";
    }
  }

  function $(e){
    return document.getElementById(e);
  }

  function errorHandler( type, error ) {
    var msg = "Something went horribly wrong ...\n" +
        error.message;
    alert( msg );
  }

  function Left(str, n){
	if (n <= 0)
	    return "";
	else if (n > String(str).length)
	    return str;
	else
	    return String(str).substring(0,n);
  }

  function Right(str, n){
    if (n <= 0)
       return "";
    else if (n > String(str).length)
       return str;
    else {
       var iLen = String(str).length;
       return String(str).substring(iLen, iLen - n);
    }
  }

  function verifySearch(){
    var strErr = "";
    if(document.search.strTitle.value.length < 1 && document.search.strAuthor.value.length < 1 && document.search.strKeyword.value.length < 1 && document.search.strISBN.value.length < 1){
      alert("To perform a search you must enter part of the title, author, ISBN or a keyword.");
      return false;
    }else{return true;}
  }