function MyJax(){
        var customize = '';
        var dimension = 'standard';
        var affiliateId = 'CD938';
        var DGFilename = 'components/gen_engine.php';
        var baseUrl = 'http://3g-tech.3-mobile-affiliate.com/dealgenerator/';
        var styleLink = {
            elementType : 'link',
            elementAtts : {
                id    : 'dgStyleTag',
                href  : '',
                rel    : 'stylesheet',
                type : 'text/css'
            }
        }// End of tag array
        var scriptTag  = {
            elementType : 'script',
            elementAtts : {
                src   : '',
                type  : 'text/javascript',
                rel   : 'stylesheet'
            }
        }// End of tag array

        var deal_Generator = 
            "<div id=\"dealGenerator\">"
                +"<div id=\"dealGenControlsBox\">"
                    +"<img id=\"impression\" src=\"http://login.3-mobile-affiliate.com/42/938/2087/\" style=\"display:none;position:absolute;\" />\n\n"
                        +"<div id=\"dealGenOpt\">\n"
                            +"<input id=\"goButton\" type=\"image\" src=\"http://3gtech.test.summit.co.uk/dealgenerator/img/go_button.png\" />\n"
                            +"<span id=\"dealGenHandsetLabel\" class=\"dealGenLabel\" for=\"dealGenHandset\">Genre</span>\n"
                            +"<select id=\"dealGenHandset\" class=\"dealGen\" title=\"Choose a Genre\">\n"
                                +"<option>Smartphone</option>\n"
                                +"<option>Cameraphone</option>\n"
                                +"<option>Social Networking Phone</option>\n"
                                +"<option>Simple Phone</option\n>"
                                +"<option>SIM</option>\n"
                                +"<option>Refurbished</option>\n"
                                +"<option>Laptop/Dongle/Modem</option>\n"
                            +"</select>\n"
                            +"<span id=\"dealGenPlanLabel\" class=\"dealGenLabel\" for=\"dealgeneratorPlan\">Plan </span>\n"
                            +"<select id=\"dealGenPlan\" class=\"dealGen\" title=\"Pick a plan\">\n"
                                +"<option>Texter Plan</option>\n"
                                +"<option>Talker Plan</option>\n"
                                +"<option>Pay As You Go</option>\n"
                                +"<option id=\"blankPlan\" style=\"display:none\" ></option>\n"
                            +"</select>\n"
                            +"<span id=\"dealGenPriceLabel\" class=\"dealGenLabel\" for=\"dealGenPrice\">Price </span>\n"
                            +"<select id=\"dealGenPrice\" class=\"dealGen\" title=\"Choose your price range\">\n"
                                +"<option>Any</option>\n"
                                +"<option>10-15</option>\n"
                                +"<option>15-20</option>\n"
                                +"<option>20 Plus</option>\n"
                                +"<option id=\"blankPrice\" style=\"display:none\" ></option>\n"
                            +"</select>\n"
                        +"</div>"
                    +"</div>"
                +"\n<div id=\"crop\">\n\n"
                +"<div id=\"genDiv\">"
                +"<!-- Dynamic code goes here! -->\n"
                +"</div>"
                +"\n</div>"
            +"</div><!-- End DealGenerator -->\n";

        function getById(id){
            return document.getElementById(id);
        }
        function keyValPair(key, value){
            return encodeURIComponent(key) + "=" + encodeURI(value);
        }
        function getTarget(e){
            var target = (window.event ? window.event.srcElement : (e ? e.target : null));
            if (!target){
                throw 'Could not return target';
            }
            return target;
        }
        function getOptions() {
            var qString = "?" + keyValPair('afid', affiliateId)
                + '&' + keyValPair('dimension', dimension);
            var selectArray = new Array();
            selectArray.push(getById('dealGenHandset'));
            var tmpPlan = getById('dealGenPlan');
            if(tmpPlan.disabled==false)
            selectArray.push(tmpPlan);
            var tmpPrice = getById('dealGenPrice');
            if(tmpPrice.disabled==false)
            selectArray.push(tmpPrice);
            for (var i = 0; i < selectArray.length; i++)
            {
                var selectIndex = selectArray[i].selectedIndex;
                qString += '&' + keyValPair(selectArray[i].id , selectArray[i].options[selectIndex].text);
            }
            if(customize.length > 0) qString += '&customisation=' + customize;
            return qString;
        }
        function createTag(hashArray){
            var tag = document.createElement(hashArray['elementType']);
            var elementAtts = hashArray['elementAtts'];
            try{
                for(var key in elementAtts){
                    tag.setAttribute(key, elementAtts[key]);
                }
                if (hashArray['htmlText'])
                    tag.innerHTML = hashArray['htmlText'];
            }
            catch (e){
                alert('Err: problem building tag: ' + e.toString());
            }
            return tag;
        }
        function onSelectChange(e){
            var select = getTarget(e);
            var selectText = select.options[select.selectedIndex].text;
            resetOpts();
            switch(selectText){
                case 'SIM':
                    var plan = getById('dealGenPlan');
                    var price = getById('dealGenPrice');
                    newOpt(plan, '', 'blank', true, plan.options[0]);
                    plan.disabled = true;
                    newOpt(price, '', 'blank', true, price.options[0]);
                    price.disabled = true;
                    break;
                case 'Laptop/Dongle/Modem':
                    var plan = getById('dealGenPlan');
                    newOpt(plan, '', 'blank', true, plan.options[0]);
                    plan.disabled = true;
                    break;
                case 'Pay As You Go':
                    var price = getById('dealGenPrice');
                    newOpt(price, '', 'blank', true, price.options[0]);
                    price.disabled = true;
                    break;
                default:
                    //Do nothing...
                    break;
            }
        }
        function newOpt(select, text, val, selected, position){
            text = text||'';
            val = val||'';
            selected = selected||false;
            try{
                select.add(new Option(text, val, false, selected), position);
            }
            catch(e){ //in IE, try the below version instead of add()
                select.add(new Option(text, val, false, selected), 0);
            }
        }
        function remFirstOpts(selectArr){
            for(var i = 0, len=selectArr.length; i<len; i++){
                if(selectArr[i].options[0].value=='blank'){
                    selectArr[i].remove(0);
                }
            }
        }
        function resetOpts(){
            var selects = [];
            selects.push(getById('dealGenHandset'),getById('dealGenPlan'),getById('dealGenPrice'));
            remFirstOpts(selects);
            for(var i = 0, len = selects.length; i<len; i++){
                selects[i].disabled = false;
            }
        }
        function onCustomize(e){
            try{
                var select = getById('dealGenHandset');
                //Remove SIM, Refurb. & Dongles from genre select
                for(var i=0; i<3; i++){
                    select.remove(select.options.length-1);
                }
                //Remove Mix & Match from contracts
                select = getById('dealGenPlan');
                select.remove(1);

            }catch(e){alert(e.toString())}
        }
        this.qServ = function(){
            var genDivElm = getById('genDiv');
            var url = DGFilename;
            url += getOptions();
            scriptTag.elementAtts.src = baseUrl + url;
            try{
                genDivElm.replaceChild(createTag(scriptTag), genDivElm.firstChild);
            }catch(e){
                alert('Err: whilst injecting script\n' + e.toString());
            }
            return true;
        }
        this.addEvent = function(elm, evType, fn, useCapture) {
            try{
                if (window.addEventListener) {
                    elm.addEventListener(evType, fn, useCapture);
                }
                else if (window.attachEvent) {
                    elm.attachEvent('on'+ evType, fn);
                }
                else {
                    elm['on' + evType] = fn;
                }
            }
            catch(e){
                alert('Err: in addEvent; ' + e.toLocaleString());
            }
        }
        this.domReady = function(initFunc){
            if (document.addEventListener){
                document.addEventListener("DOMContentLoaded", initFunc, false);
            }
            else {
                window.attachEvent("onload", initFunc);
//                if (document.documentElement.doScroll){
//                    try{
//                        document.documentElement.doScroll("left");
//                    }
//                    catch(e){
//                        window.setTimeout(domReady(initFunc), 0);
//                        return;
//                    }
//                }
//                else {
//                    window.attachEvent("onload", initFunc);
//                    return;
//                }
//                initFunc.apply();
            }
        }
        this.init = function(){
            var dgb = getById('dealGenBox');
            var theHead = document.getElementsByTagName('head');
            styleLink.elementAtts.href = baseUrl + 'styles/deal_gen_style_standard.css';
            var link = createTag(styleLink);
            theHead[0].appendChild(link);
            dgb.innerHTML = deal_Generator;
            var gb = getById('goButton');
            this.addEvent(gb, 'click', this.qServ, false);
            
            var sel = getById('dealGenHandset');
            this.addEvent(sel, 'change', onSelectChange, false);
            sel2 = getById('dealGenPlan');
            this.addEvent(sel2, 'change', onSelectChange, false);
            if(customize =='refurbished'){
                onCustomize();
            }
        }
    }
    var myjax = new MyJax();
    myjax.domReady(function(){
        myjax.init();
        myjax.qServ();
    });