var PictureWindow;

function HidePicture() {
	if(typeof PictureWindow != "undefined" && PictureWindow.closed != true) {
		PictureWindow.close();
	}
}

function ShowPicture(url, width, height) {
	var x = 150;
	var y = 50;
	var help = 'width=' + width + ',height=' + height + ',toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,copyhistory=yes,resizable=no,left=' + x + ',top=' + y;
	PictureWindow = window.open(url, 'Picture', help);
}