var ip_link='https://analytics.metrotechs.io/script/get_ip';
            var server_link='https://analytics.metrotechs.io/script/server_info';
            var scroll_server_link='https://analytics.metrotechs.io/script/scroll_info';
            var click_server_link='https://analytics.metrotechs.io/script/live_check_info';
            var live_check_link='https://analytics.metrotechs.io/script/live_check_info';
            var browser_js_link='https://analytics.metrotechs.io/assets/js/useragent.js';


            var hmsas_22_csrf_token = 'nCQJdWqL8o19gqdy9hnrtp6HFlfTPki2bi6mTTl1';



            function document_height(){
                var body = document.body,
                html = document.documentElement;
                var height = Math.max( body.scrollHeight, body.offsetHeight, 
                                   html.clientHeight, html.scrollHeight, html.offsetHeight );
                return height;
            }

            function getScrollTop(){
                if(typeof pageYOffset!= 'undefined'){
                    //most browsers except IE before #9
                    return pageYOffset;
                }
                else{
                    var B= document.body; //IE 'quirks'
                    var D= document.documentElement; //IE with doctype
                    D= (D.clientHeight)? D: B;
                    return D.scrollTop;
                }
            }


            function ajax_dolphin(link,data){
                  xhr = new XMLHttpRequest();
                  xhr.open('POST',link);
                  xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                  xhr.setRequestHeader('X-CSRF-TOKEN', hmsas_22_csrf_token);
                  xhr.send(data);
            }


            function get_browser_info(){
                        var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || []; 
                        if(/trident/i.test(M[1])){
                            tem=/\brv[ :]+(\d+)/g.exec(ua) || []; 
                            return {name:'IE',version:(tem[1]||'')};
                            }   
                        if(M[1]==='Chrome'){
                            tem=ua.match(/\bOPR\/(\d+)/)
                            if(tem!=null)   {return {name:'Opera', version:tem[1]};}
                            }   
                        M=M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?'];
                        if((tem=ua.match(/version\/(\d+)/i))!=null) {M.splice(1,1,tem[1]);}
                        return {
                          name: M[0],
                          version: M[1]
                        };
             }
             
             /** Creating Cookie function **/
             function createCookie(name,value,days) {
                if (days) {
                    var date = new Date();
                    date.setTime(date.getTime()+(days*24*60*60*1000));
                    var expires = '; expires='+date.toGMTString();
                }
                else var expires = '';
                document.cookie = name+'='+value+expires+'; path=/';
            }

            /***Read Cookie function**/
            function readCookie(name) {
                var nameEQ = name + '=';
                var ca = document.cookie.split(';');
                for(var i=0;i < ca.length;i++) {
                    var c = ca[i];
                    while (c.charAt(0)==' ') c = c.substring(1,c.length);
                    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
                }
                return null;
            }

            /** Delete Cookie Function **/
            function eraseCookie(name) {
                createCookie(name,'',-1);
            }


            function time_difference(from_time,to_time){
                var differenceTravel = to_time.getTime() - from_time.getTime();
                var seconds = Math.floor((differenceTravel) / (1000));
                return seconds;
                
            }
             
            function ajax_call()
            {

                    
                /**Load browser plugin***/
                var y = document.createElement('script');
                y.src = browser_js_link;
                document.getElementsByTagName('head')[0].appendChild(y);

                /**after browser plugin loaded**/
                y.onload=function()
                {

                    var ip;
                    var device;
                    var mobile_desktop;
                    
                    device=jscd.os;
                    if(jscd.mobile){
                        mobile_desktop='Mobile';
                    }
                    else{
                        mobile_desktop='Desktop';
                    }
                    
                    var browser_info=get_browser_info();
                    var browser_name=browser_info.name;
                    var browser_version=browser_info.version;
                    
                    var browser_rawdata = JSON.stringify(navigator.userAgent);
                    // var website_code = document.getElementById('xvas-22-domain-name').getAttribute('xvas-22-data-name');
                    var website_code = document.querySelector('script#xvas-22-domain-name').getAttribute('xvas-22-data-name');
                    
                    /**Get referer Address**/
                    var referrer = document.referrer;
                    
                    /* Get Current url */
                    var current_url = window.location.href;
                        
                    /** Get cookie value , if it is already set or not */
                    var cookie_value=readCookie('xvas_22_dolphin');
                    var extra_value= new Date().getTime();
                    
                    /**if new visitor set the cookie value a random number***/
                    if(cookie_value=='' || cookie_value==null || cookie_value === undefined){
                        var is_new=1;
                        var random_cookie_value=Math.floor(Math.random()*999999);
                        random_cookie_value=random_cookie_value+extra_value.toString();
                        createCookie('xvas_22_dolphin',random_cookie_value,1);
                        cookie_value=random_cookie_value;
                    }
                    else{
                        createCookie('xvas_22_dolphin',cookie_value,1);
                        var is_new=0;
                    }
                    
                    
                    var session_value=sessionStorage.xvas_22_dolphin_session;
                    
                    if(session_value=='' || session_value==null || session_value === undefined){
                        var random_session_value=Math.floor(Math.random()*999999);
                        random_session_value=random_session_value+extra_value.toString();
                        sessionStorage.xvas_22_dolphin_session=random_session_value;
                        session_value=random_session_value;
                    }
                        
                    /**if it is a new session then create session***/
                    var data='website_code='+website_code+'&browser_name='+browser_name+'&browser_version='+browser_version+'&device='+device+'&mobile_desktop='+mobile_desktop+'&referrer='+referrer+'&current_url='+current_url+'&cookie_value='+cookie_value+'&is_new='+is_new+'&session_value='+session_value+'&browser_rawdata='+browser_rawdata;

                    ajax_dolphin(server_link,data);
                                            
                    
                    /* Scrolling detection, if it is scrolling more than 50%  and after 5 seceond of last scroll then enter the time ***/
                    var last_scroll_time;
                    var scroll_track=0;
                    var time_dif=0;
                    
                    window.onscroll =   function(){
                        
                        var  wintop = getScrollTop();
                        var  docheight = document_height();
                        var  winheight = window.innerHeight;
                         
                        var  scrolltrigger = 0.50;
                         
                        if ((wintop/(docheight-winheight)) > scrolltrigger) {
                         
                            scroll_track++;
                            var to_time=new Date();
                            
                            if(scroll_track>1){
                                time_dif=time_difference(last_scroll_time,to_time);
                            }
                            
                            if(scroll_track==1 || time_dif>5){
                                last_scroll_time=new Date();
                                
                                var data='website_code='+website_code+'&current_url='+current_url+'&cookie_value='+cookie_value+'&session_value='+session_value;
                                ajax_dolphin(scroll_server_link,data);
                                
                            }
                        }
                    };      
                    
                    
                    
                    /*** track each engagement record. Enagagment is calculated by click function****/
                    var last_click_time;
                    var click_track=0;
                    var click_time_dif=0;
                    
                    document.onclick = function(){
                            click_track++;
                            var to_time=new Date();
                            
                            if(click_track>1){
                                click_time_dif=time_difference(last_click_time,to_time);
                            }
                            
                            if(click_track==1 || click_time_dif>5){
                                last_click_time=new Date();
                                var data='website_code='+website_code+'&current_url='+current_url+'&cookie_value='+cookie_value+'&session_value='+session_value;
                                ajax_dolphin(click_server_link,data);
                                
                            }   
                    };       
                }
            }

            function init(){
                ajax_call();
            }

            init();