function __orchk(orid,revenue,items){
    
    set_onload_hendler(load_event);
    
    function set_onload_hendler(callback){
        if (/loaded|complete/.test(document.readyState)) {
            callback();
        } else {
            //ff / opera ...
            if (document.addEventListener) {
                document.addEventListener("DOMContentLoaded", callback, false);
            } else if (/WebKit/i.test(navigator.userAgent)) { //  Safari
                var _timer = setInterval(function() {
                    if (/loaded|complete/.test(document.readyState)) {
                        clearInterval(_timer);
                        callback();
                    }
                }, 10);
            } else {
                // ie
                /*@cc_on @*/
                /*@if (@_win32)
                        document.write("<script id=\"__ie_onload\" defer=\"defer\" src=\"javascript:void(0)\"><\/script>");
                        var script = document.getElementById("__ie_onload");
                        script.onreadystatechange = function() {
                                if (this.readyState == "complete") {
                                callback(); 
                                }
                        };
                      /*@else @*/  

                window.onload = callback;
            /*@end @*/
            }


        }
    }
    
    function cookies_get(name){
       var c_array = document.cookie.split( ';' );

       	for ( i = 0; i < c_array.length; i++ )
	{
		var cookie = c_array[i];
		var index = cookie.indexOf( name + "=" )
                if(index < 0 || index > 1){
                    continue;
                }
                var name_len = name.length;
                return cookie.slice(index + name_len + 1);
	}
       
       return '';
    }
    
    function load_event(){ 
       // var cook_param = cookies_get('thr'+cr_id);
//        if(!cook_param){
//            return false;
//        }
        var url = "http://metricscience.com/pagetracker/o"+
        '?r='+Math.random() +
        //'&cr=' + encodeURIComponent(cr_id)+
        '&oid=' + encodeURIComponent(orid) +
        '&re=' + encodeURIComponent(revenue) +
        //'&co=' + encodeURIComponent( cook_param ) +
        '&i=' + encodeURIComponent(items);
        ;

        include(url);  
    }
    
    function include(src, callback)
    {
        var head = document.getElementsByTagName('head')[0];
        var script = document.createElement('script');
        script.type = 'text/javascript';

        if(callback)
        {
            var userAgent = navigator.userAgent.toLowerCase();

            if(/msie/.test( userAgent ) && !/opera/.test( userAgent ))
            {
                script.onreadystatechange = function()
                {
                    if(script.readyState == 'complete' || script.readyState == 'loaded')
                        callback();
                }
            }
            else
            {
                script.onload = function ()
                {
                    callback();
                }
            }
        }

        script.src = src;
        head.appendChild(script);
        return script;
    }
    
}