const TFS_u = 'https://www.seasalepage.com/tfs_a.php';
const TFS_q = window.location.search;
const TFS_g = new URLSearchParams(TFS_q);
const TFS_d = {
	    TFS_r: document.referrer,
	    TFS_url: window.location.href,
        TFS_h: TFS_g.get('h'), 
	    };
window.addEventListener('scroll',function(){	
const TFS_rq = new XMLHttpRequest();
TFS_rq.open('POST', TFS_u, true);
TFS_rq.setRequestHeader('Content-Type', 'application/json');
TFS_rq.send(JSON.stringify(TFS_d));
},{once : true});