function popup_close()
	{
	var x = document.getElementById("popup");
	x.style.visibility = "hidden";
	}

function popup()
	{
	width = 352;
	height = 500;

	Popup = open('./modules/htmlpopup.php','','menubar=no,scrollbars=no,width=' + width + ',height=' + height + '');
	sy = screen.availHeight; sx = screen.availHeight;
	x = (sx / 2) - (width / 2);
	y = (sy / 2) - (height / 2);
	Popup.moveTo(x,y);
	Popup.focus();
	}