function centerPopup() {
	var sizeArray = getPageSize();
	var popup = document.getElementById("popuplayer");

	if (popup) {
		popup.style.left = (sizeArray[2] - 600) / 2 + 'px';
		popup.style.top  =  (sizeArray[3] - 489) / 2 + 'px';
		popup.style.visibility = 'visible';
	}
}

function hidePopup() {
	var popup = document.getElementById('popuplayer');

	if (popup) {
		popup.innerHTML = '';
	}
}