function Open_TrueEBook(arg_ebook){

	var top, left, width=200, height=200;
		top = screen.height/2 - height/2;
		left = screen.width/2 - width/2;
	
	var TrueEBook = window.open(arg_ebook , "TrueEBook" ,
									"left=" + left + ", " +
									"top=" + top + ", " +
									"width=" + width + ", " +
									"height=" + height + ", " +
									"toolbar=no, " +
									"location=no, " +
									"directories=no ," +
									"status=no ," +
									"menubar=no, " +
									"scrollbars=no, " +
									"resizable=no" );
	TrueEBook.focus();
}