<script type="text/javascript" language="javascript"><!--
// Copyright (c) May 2002 by Michał Nazarewicz (mina86@tlen.pl)
// Idea by Michał Jazłowiecki (michalj@prioris.mini.pw.edu.pl)
// This software is free; It's distributed under terms of GNU General Public License

var theDoc=document, theAll=(theDoc.all)?theDoc.all:null;
function ShowHideLayer(name, state) {
	if (theAll==null) return;
	if (arguments.length<2) state=theAll[name].style.display=="none";
	theAll[name].style.display=(state)?"block":"none";
}
function ButtonClick(but, name, desc1, desc2) {
	var state=but.value==desc1;
	but.value=(state)?desc2:desc1;
	ShowHideLayer(name,!state);
}
function addShowHideButton(name, desc1, desc2, state) {
	if (theAll==null) return;
	theDoc.write('<form><input type="button" value="'+(state?desc1:desc2)+
	'" onclick="ButtonClick(this, \''+name+'\',\''+desc1+'\',\''+desc2+'\');" /></form>');
}
//--></script>