function Querystring(qs) 
{ // optionally pass a querystring to parse
	this.params = new Object();
	this.get = Querystring_get;
	
	if (qs == null)
		qs = location.hash.substring(1,location.hash.length);

	if (qs.length == 0) 
		return;

	// Turn <plus> back to <space>
	// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ');
	
	 // parse out name/value pairs separated via &
	var args = qs.split('&');
	
	// split out each name=value pair
	for (var i=0; i<args.length; i++) 
	{
		var value;
		var pair = args[i].split('=');
		var name = unescape(pair[0]);

		if (pair.length == 2)
			value = unescape(pair[1]);
		else
			value = name;
		
		this.params[name] = value;
	}
}

function Querystring_get(key, default_) 
{
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) 
		default_ = null;
	
	var value = this.params[key];
	
	if (value == null) 
		value=default_;
	
	return value;
}


function setURL(path) {
	var anchorSeparator = "#";
	var myURL = new String(document.location);
	var oldPath = myURL.split(anchorSeparator)[1];
	myURL = myURL.split(anchorSeparator)[0];
	if (path == undefined) {
		document.location = myURL + anchorSeparator + "";
	} else if (oldPath != path) {
		prevPath = path;		
		//document.location = myURL + anchorSeparator + path;
		location.href = myURL + anchorSeparator + "section=" + path;
	}
}

function setTitle(titleTxt){
	document.title = titleTxt;
}