More parser work: fixed a few bugs with [[intlinks]] in headers, a bug that caused the paragraph parser to return an empty string, and added a warning/backup-and-restore for when a render stage returns an empty string.
input.radio {border:1px none #000; background:transparent; vertical-align:middle;}
.panel_wrapper div.current {height:80px;}
#width {width:50px; vertical-align:middle;}
#width2 {width:50px; vertical-align:middle;}
#size {width:100px;}