$(document).ready(function(){
    PostEvent('view');
});

function PostEvent(eventtype) {
    var refererurl;
    if ( typeof document.referrer == "undefined" ) {
        refererurl = '';
    } else {
        refererurl = document.referrer;
    }
    $.post("events.php", { type: eventtype, referer: refererurl, url: location.href} );
}