// holds an instance of XMLHttpRequest
var SPLxmlHttp = SPLcreateXmlHttpRequestObject();
var LastArea = 1;
var LastSearchAreaID = 'SPLSearchArea';

// creates an XMLHttpRequest instance
function SPLcreateXmlHttpRequestObject()
{
    // will store the reference to the XMLHttpRequest object
    var xmlHttp;
    // this should work for all browsers except IE6 and older
    try
    {
        // try to create XMLHttpRequest object
        xmlHttp = new XMLHttpRequest();
    }
    catch (e)
    {
        // assume IE6 or older
        var XmlHttpVersions = new Array('MSXML2.XMLHTTP.6.0',
                                    'MSXML2.XMLHTTP.5.0',
                                    'MSXML2.XMLHTTP.4.0',
                                    'MSXML2.XMLHTTP.3.0',
                                    'MSXML2.XMLHTTP',
                                    'Microsoft.XMLHTTP');
        // try every prog id until one works
        for (var i = 0; i < XmlHttpVersions.length && !xmlHttp; i++)
        {
            try
            {
                // try to create XMLHttpRequest object
                xmlHttp = new ActiveXObject(XmlHttpVersions[i]);
            }
            catch (e) { }
        }
    }
    // return the created object or display an error message
    if (!xmlHttp)
        alert("Error creating the XMLHttpRequest object.");
    else
        return xmlHttp;
}


// function called when the state of the HTTP request changes
function SPLhandleRequestStateChange()
{
    try
    {
        // when readyState is 4, we are ready to read the server response
        if (SPLxmlHttp.readyState == 4)
        {
            // continue only if HTTP status is "OK"
            if (SPLxmlHttp.status == 200)
            {
                try
                {
                    // do something with the response from the server
                    SPLhandleServerResponse();
                }
                catch (e)
                {
                    // display error message
                    //alert("Error reading the response: " + e.toString());
                }
            }
            else
            {
                // display status message
                alert("There was a problem retrieving the data:\n" +
		    SPLxmlHttp.statusText);
            }
        }
    }
    catch (e)
    {
        // ignore
    }
}

// #################### Get Address to Combo ############################ 

// read a file from the server (area is for multiple address sections on same page)
function SPLGetAddressData(postcode, area, searchAreaID)
{
    if (undefined == searchAreaID)
    {
        searchAreaID = 'SPLSearchArea';
    }
    // only continue if xmlHttp isn't void
    if (SPLxmlHttp)
    {
        LastArea = area;
        LastSearchAreaID = searchAreaID;
        // try to connect to the server
        try
        {
            // initiate reading a file from the server
            SPLxmlHttp.open("GET", "SPLGetFullAddress1.aspx?postcode=" + escape(postcode), true);
            SPLxmlHttp.onreadystatechange = SPLhandleRequestStateChange;
            SPLxmlHttp.send(null);
        }
        // display the error in case of failure
        catch (e)
        {
            //alert("Can't connect to server:\n" + e.toString());
            //Suppress error, since can be cause by two calls at once
        }
    }
}


// gets word

function getWord(str,pos)
{
      var SplitString = str.split(" ");
      return SplitString[parseInt(pos)-1];

}


// #################### On Click on Combo ############################ 

// handles click on combo
function SPLAddressChange(AddressCombo)
{
    // only continue if xmlHttp isn't void
    if (SPLxmlHttp)
    {
        // try to connect to the server
        try
        {
            // initiate reading a file from the server
            SPLxmlHttp.open("GET", "SPLGetFullAddress2.aspx?AddressID=" + AddressCombo.options[AddressCombo.selectedIndex].value, true);
            SPLxmlHttp.onreadystatechange = SPLhandleRequestStateChange;
            SPLxmlHttp.send(null);
        }
        // display the error in case of failure
        catch (e)
        {
            //alert("Can't connect to server:\n" + e.toString());
            //Suppress error, since can be cause by two calls at once
        }
    }

    document.getElementById(LastSearchAreaID + LastArea).innerHTML = "";
}


// #################### Handle returned data ############################ 
function SPLhandleServerResponse()
{
    //##########################################################
    //### Delete this line on production server              ###
    //### This can be used for debuging to show XML returned ###
    //alert(SPLxmlHttp.responseText);
    //##########################################################

    // Test that XML contains valid Address, test for <line1>
    var Credits = "", COMP = "", LINE1 = "", LINE2 = "", LINE3 = "", TOWN = "", COUNTY = "", POSTCODE = "", COUNTRY = "", MultiLineAddress = ""
    var XMLresponse = SPLxmlHttp.responseText;

    if (XMLresponse.indexOf("</select>") > 0)
    {
        //if contains a </select> then must be combo box
        document.getElementById(LastSearchAreaID + LastArea).innerHTML = XMLresponse;
    }
    else
    {
        if (XMLresponse.indexOf("<line1>") == -1)
        // error or no data so show message
            document.getElementById(LastSearchAreaID + LastArea).innerHTML = XMLresponse;
        else
        {
            //contains address information so write to fields
            // read the message from the server
            var xmlResponse = SPLxmlHttp.responseXML;

            // obtain the XML's document element
            xmlRoot = xmlResponse.documentElement;

            if (xmlRoot.getElementsByTagName("credits_display_text").item(0).firstChild)
            { Credits = xmlRoot.getElementsByTagName("credits_display_text").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("organisation").item(0).firstChild)
            { COMP = xmlRoot.getElementsByTagName("organisation").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("line1").item(0).firstChild)
            { LINE1 = xmlRoot.getElementsByTagName("line1").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("line2").item(0).firstChild)
            { LINE2 = xmlRoot.getElementsByTagName("line2").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("line3").item(0).firstChild)
            { LINE3 = xmlRoot.getElementsByTagName("line3").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("town").item(0).firstChild)
            { TOWN = xmlRoot.getElementsByTagName("town").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("county").item(0).firstChild)
            { COUNTY = xmlRoot.getElementsByTagName("county").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("postcode").item(0).firstChild)
            { POSTCODE = xmlRoot.getElementsByTagName("postcode").item(0).firstChild.data; }
            if (xmlRoot.getElementsByTagName("country").item(0).firstChild)
            { COUNTRY = xmlRoot.getElementsByTagName("country").item(0).firstChild.data; }

            // Massage the data
            var HOUSENUM = '';
            var HOUSENAME = '';
	    var FIRSTWORD = '';
	    var FIRSTWORD = getWord(LINE1,1);
            var houseNumber = FIRSTWORD;

            if (!isNaN(houseNumber))
            {
                HOUSENUM = houseNumber + '';
                // Line 1 starts with a number, so split it into "{house number} {street 1}"
                try
                {
                    LINE1 = LINE1.substring(LINE1.indexOf(' ') + 1);
                } 
                catch (e)
                {
                }
            }
            else
            {
                // Line 1 doesn't start with a number, assume it's a house name
		var NUMBERCHECK = parseInt(FIRSTWORD);
		if (isNaN(NUMBERCHECK))
			{
                	HOUSENAME = LINE1;
                	LINE1 = LINE2
			LINE2 = LINE3
			}
		else
			{
			HOUSENAME = FIRSTWORD;
			LINE1 = LINE1.replace(FIRSTWORD,'');
			}

            }

            if (LastArea == 1)
            {
                $("txtDeliveryCompanyName").value = COMP;
                $("txtDeliveryPostcode").value = POSTCODE;
                $("txtDeliveryBuildingNumber").value = HOUSENUM;
                $("txtDeliveryBuildingName").value = HOUSENAME;
                $("txtDeliveryStreet").value = LINE1;
                $("txtDeliveryStreet2").value = LINE2;
                $("txtDeliveryCity").value = TOWN;
                $("txtDeliveryCounty").value = COUNTY;
                $("ddlDeliveryCountry").value = 'GB';

                // Multi line
                //if (COMP != "") { MultiLineAddress = MultiLineAddress + COMP + "\n" }
                //if (LINE1 != "") { MultiLineAddress = MultiLineAddress + LINE1 + "\n" }
                //if (LINE2 != "") { MultiLineAddress = MultiLineAddress + LINE2 + "\n" }
                //if (LINE3 != "") { MultiLineAddress = MultiLineAddress + LINE3 + "\n" }
                //if (TOWN != "") { MultiLineAddress = MultiLineAddress + TOWN + "\n" }
                //if (COUNTY != "") { MultiLineAddress = MultiLineAddress + COUNTY + "\n" }
                //if (POSTCODE != "") { MultiLineAddress = MultiLineAddress + POSTCODE + "\n" }
                //if (COUNTRY != "") { MultiLineAddress = MultiLineAddress + COUNTRY + "\n" }
                //document.getElementById("memo").value=MultiLineAddress;
            }
            else
            {
                $("txtBillingCompanyName").value = COMP;
                $("txtBillingPostcode").value = POSTCODE;
                $("txtBillingBuildingNumber").value = HOUSENUM;
                $("txtBillingBuildingName").value = HOUSENAME;
                $("txtBillingStreet").value = LINE1;
                $("txtBillingStreet2").value = LINE2;
                $("txtBillingCity").value = TOWN;
                $("txtBillingCounty").value = COUNTY;
                $("ddlBillingCountry").value = 'GB';

                // Multi line
                //if (COMP != "") { MultiLineAddress = MultiLineAddress + COMP + "\n" }
                //if (LINE1 != "") { MultiLineAddress = MultiLineAddress + LINE1 + "\n" }
                //if (LINE2 != "") { MultiLineAddress = MultiLineAddress + LINE2 + "\n" }
                //if (LINE3 != "") { MultiLineAddress = MultiLineAddress + LINE3 + "\n" }
                //if (TOWN != "") { MultiLineAddress = MultiLineAddress + TOWN + "\n" }
                //if (COUNTY != "") { MultiLineAddress = MultiLineAddress + COUNTY + "\n" }
                //if (POSTCODE != "") { MultiLineAddress = MultiLineAddress + POSTCODE + "\n" }
                //if (COUNTRY != "") { MultiLineAddress = MultiLineAddress + COUNTRY + "\n" }
                //document.getElementById("memo2").value=MultiLineAddress;
            }
        }
    }
}