function initURL() {
    var theURL = document.URL;
    var theURLArr = theURL.split("?");
    if (theURLArr.length > 1) {
        var theReferrer = document.referrer;
        var paraArr = theURLArr[theURLArr.length - 1].split("&");
        for (i = 0; i < paraArr.length; i ++) {
            if (paraArr[i].indexOf("trace_code") == 0) {
                var trace_code = paraArr[i].split("=");
                var pay_link_num = 10;
                var pay_link_string = "pay_link_";
                for (n = 0; n < pay_link_num; n ++) {
                    if (n > 0) pay_link_string = "pay_link_" + n;
                    if (document.getElementById(pay_link_string) != undefined) document.getElementById(pay_link_string).href = document.getElementById(pay_link_string).href + "&customize_code=" + trace_code[1];
                }
				var download_link_string = "download_link_";
				var undefined;
								var download_link_num = 10;
								var download_link_string = "download_link";
								for (n = 0; n < download_link_num; n ++) {
									if (n > 0) download_link_string = "download_link_" + n;
									if (document.getElementById(download_link_string) != undefined) {
										var currDownloadURL = document.getElementById(download_link_string).href;
										var currDownloadURLForProductCode = currDownloadURL.indexOf("product_code=");
										if(currDownloadURLForProductCode != -1) {
											document.getElementById(download_link_string).href = document.getElementById(download_link_string).href + "&customize_code=" + trace_code[1];
										} else {
											var currDownloadURLForMac = currDownloadURL.indexOf("-mac");
											
											if(currDownloadURLForMac != -1) {
												var download_link_lengt = document.getElementById(download_link_string).href.length;
												var setupName = document.getElementById(download_link_string).href.substr(download_link_lengt - 10, 10).split(".");
												var setupURL = document.getElementById(download_link_string).href.substr(0, download_link_lengt - 10).split("/");
												var newName = "";
												for (k = 0; k < setupURL.length - 1; k++) newName += setupURL[k] + "/";
												newName = newName + "customize/" + setupURL[setupURL.length - 1];
												newName = newName + setupName[0] + "(ad-" + trace_code[1] + ")";
												for (j = 1; j < setupName.length; j ++) newName += "." + setupName[j];
												document.getElementById(download_link_string).href = newName;
											} else {
												var download_link_lengt = document.getElementById(download_link_string).href.length;
												var setupName = document.getElementById(download_link_string).href.substr(download_link_lengt - 10, 10).split(".");
												var setupURL = document.getElementById(download_link_string).href.substr(0, download_link_lengt - 10).split("/");
												var newName = "";
												for (k = 0; k < setupURL.length - 1; k++) newName += setupURL[k] + "/";
												newName = newName + "customize/" + setupURL[setupURL.length - 1];
												newName = newName + setupName[0] + "-" + trace_code[1];
												for (j = 1; j < setupName.length; j ++) newName += "." + setupName[j];
												document.getElementById(download_link_string).href = newName;
											}
										}
									}
								}
           }
      	}
 	}
}
function changeProduct(_this) {
    var pay_link_x = _this.value;
    document.getElementById("pay_link_1").href = document.getElementById(pay_link_x).href;
    if (pay_link_x == 'pay_link_2') {
	document.getElementById("div_download_link_1").style.display = "block";
	document.getElementById("div_download_link_2").style.display = "none";
	document.getElementById("div_download_link_3").style.display = "none";
	}
    if (pay_link_x == 'pay_link_3') 
	{
	document.getElementById("div_download_link_1").style.display = "none";
	document.getElementById("div_download_link_2").style.display = "block";
	document.getElementById("div_download_link_3").style.display = "none";
	}
	if (pay_link_x == 'pay_link_4') {
	document.getElementById("div_download_link_1").style.display = "none";
	document.getElementById("div_download_link_2").style.display = "none";
	document.getElementById("div_download_link_3").style.display = "block";
	}
}