var totalMilisecStart = 0;


function lerisVideoCheckImage(id){
	
	var d = new Date();
	var curr_hour = d.getHours();
	var curr_min = d.getMinutes();
	var curr_sec = d.getSeconds();
	var curr_msec = d.getMilliseconds();
			
	var milisec = 1000;
	totalMilisecStart = curr_msec + curr_sec*milisec + curr_min*milisec*60 + curr_hour*milisec*60*60;	
	
		
	// vezmeme si obrazek
	var image = new Image();
	image.src='/common/modules/video/front/img/image.php';
	image.onload=lerisVideoImagesLoaded;	
		
}

function lerisVideoImagesLoaded(){
	
	var d = new Date();
	var curr_hour = d.getHours();
	var curr_min = d.getMinutes();
	var curr_sec = d.getSeconds();
	var curr_msec = d.getMilliseconds();
		
	var milisec = 1000;
	var totalMilisecStop = curr_msec + curr_sec*milisec + curr_min*milisec*60 + curr_hour*milisec*60*60;
	
	var diff = totalMilisecStop-totalMilisecStart;
	send(diff);	
}

function send(diff) {
        var http_request = false;
        var request = "diff="+diff;

        if (window.XMLHttpRequest) {
            http_request = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
            try {
              http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (error) {
              http_request = new ActiveXObject("Microsoft.XMLHTTP");
            }
        }

        http_request.onreadystatechange = function() { recieve(http_request); };
        http_request.open('POST', '/common/modules/video/front/recieveData.php', true);
        http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        http_request.send(request);
}

function recieve(http_request) {
        if (http_request.readyState == 4) {
            if (http_request.status == 200) {
                // nic
            } else {
                // nic
            }
        }
    }