// set your AFFILIATE IDs here. Leave blank any you do not have an account for.
var arrAffiliates = {
        'co.uk' : '',
        'com'   : '',
        'de'    : '',
        'fr'    : '',
        'ca'    : '',
        'jp'    : ''
}

/**
 * search for any AMAZON product links and replace with a referral link to the user's local Amazon site
 * @author Pete Williams
 * @url http://petewilliams.info/blog/2009/07/javascript-amazon-associate-link-localiser/
 */
//AJAX
function aaGetXmlHttpRequest() {
   var xmlHttpObj;
   if(window.XMLHttpRequest) {
      xmlHttpObj= new XMLHttpRequest();
   }else {
      try {
         xmlHttpObj = new ActiveXObject("Msxml2.XMLHTTP");
      }catch(e) {
         try {
            xmlHttpObj = new ActiveXObject("Microsoft.XMLHTTP");
         }catch(e) {
            xmlHttpObj=false;
         }
      }
   }
   return xmlHttpObj;
}
//-----------------------------------
function testip() {
xmlhttp = aaGetXmlHttpRequest();
if(!xmlhttp) return;
gt='http://'+document.location.hostname+'/ip/ip.php';
 //             alert(gt);
                xmlhttp.open('GET',gt,true);
                xmlhttp.onreadystatechange = doneip;
                xmlhttp.send(null);

}

function doneip() {
        if(xmlhttp.readyState==4 && xmlhttp.status==200) {
           var response=xmlhttp.responseText;
                checkAmazonLinks(response,0);
        }
}


function checkAmazonLinks(ipresponse,i) {
        // set required VARIABLES
        var strTld;
        var objRegexAsin        = new RegExp( '\/([A-Z0-9]{10})' );
        var objRegexSearch      = new RegExp( 'field-keywords=[A-Za-z0-9+-]+' );
//              alert(ipresponse);
                //var strCountry                = google.loader.ClientLocation.address.country_code;
                var strCountry          = ipresponse;

        // get domain TLD from country code
        switch ( strCountry ) {
                case 'GB':
                case 'IE':
                        strTld = 'co.uk';
                        break;
                case 'CA':
                        strTld = 'ca';
                        break;
                case 'FR':
                        strTld = 'fr';
                        break;
                case 'CN':
                        strTld = 'cn';
                        break;
                case 'IT':
                        strTld = 'it';
                        break;
                case 'JP':
                        strTld = 'co.jp';
                        break;
                case 'AT':
                case 'DE':
                        strTld = 'de';
                        break;
                default:
                        strTld = ( arrAffiliates[strCountry.toLowerCase()] ? strCountry.toLowerCase() : 'com' );
                        break;
        }
//alert(strCountry);

        // get all LINKS
        var arrLinks = document.getElementsByTagName( 'a' );

        // get appropriate aFFILIATE ID
        strAffiliateId = ( arrAffiliates[strTld] ? arrAffiliates[strTld] : arrAffiliatesSpares[strTld] );
        // LOOP through
        if (i<arrLinks.length) {
        //for ( i=0; i<arrLinks.length; i++ ) {

                // is it an AMAZON link
                var intIndex = arrLinks[i].href.toLowerCase().indexOf( 'amazon.' );

                if ( intIndex > 0) {
//alert(arrLinks[i].href);
                        // find ASIN
                        var arrResults = objRegexAsin.exec( arrLinks[i].href );
                        if ( arrResults ) {
                                // REPLACE URI
                                var strAsin = arrResults[1];
                                //TEST for 404
                                var test='/ip/check404.php?url=http://www.amazon.' + strTld + '/exec/obidos/ASIN/' + strAsin + '/?tag=' + strAffiliateId;
                                //alert(test);
                                arrLinks[i].href  = '/og.php?url=http://www.amazon.' + strTld + '/exec/obidos/ASIN/' + strAsin + '/?tag=' + strAffiliateId;
                                xmlhttp2 = aaGetXmlHttpRequest();
                               if(!xmlhttp2) return;
                                xmlhttp2.open('GET',test,true);
                                xmlhttp2.onreadystatechange = function() { donepage(ipresponse,i); };

                                xmlhttp2.send(null);

                        }

                        // find Search
                        var arrResults = objRegexSearch.exec( arrLinks[i].href );
                        if ( arrResults ) {
                                // REPLACE URI
                                var strSearch = arrResults[0];
//                              alert(strSearch);
                                arrLinks[i].href  = '/og.php?url=http://www.amazon.' + strTld + '/s?index=blended&tag=' + strAffiliateId + '&' + strSearch;
                		checkAmazonLinks(ipresponse,i+1); 
                        }


                }
                else checkAmazonLinks(ipresponse,i+1); 
        }
}
//if URL returns, means 404, change the link


function donepage(ipresponse,i) {
       if(xmlhttp2.readyState==4 && xmlhttp2.status==200) {
           var response=xmlhttp2.responseText;
                if(response!=0) {
                        //alert(response);
                        //redirect to homepage if 404
                        var reg="[?]tag=[0-9a-zA-Z-]+";
                        var reg2=".+exec";
                        var tag=response.match(reg);
                        var front=response.match(reg2);
                        front=front[0].replace("/exec","");
                        var newtag=front+tag[0];
                        var arrLinks = document.getElementsByTagName( 'a' );
                        for ( i=0; i<arrLinks.length; i++ ) {
                                 // is it an AMAZON link
                                 var intIndex = arrLinks[i].href.toLowerCase().indexOf( 'amazon.' );

                                 if ( intIndex > 0) {
                                                //alert(arrLinks[i].href);
                                        if(arrLinks[i].href=='http://bagwhiz.com/og.php?url='+response) {
                                                //alert(arrLinks[i].href);
                                                arrLinks[i].href=newtag;
                                                break;
                                        }
                                 }
                        }



                }
        checkAmazonLinks(ipresponse,i+1); 
        }

}


// initialise on page LOAD
if (window.addEventListener){
    window.addEventListener('load',testip,false); //W3C
} else{
    window.attachEvent('onload',testip); //IE
}

// these are the author's affiliate IDs. They will only be used for localities you do not provide an ID for.
var arrAffiliatesSpares = {
        'co.uk' : '011080-21',
        'com'   : '011080htcevhl-20',
        'de'    : '011080de-21',
        'fr'    : '011080fr-21',
        'ca'    : '011080ca-20',
        'it'    : '011080it-21',
        'cn'    : '011080-23',
        'jp'    : '011080-22'
}