function getCookieVal (offset) {
	  var endstr = document.cookie.indexOf (";", offset);
	  if (endstr == -1)
	    endstr = document.cookie.length;
	  return unescape(document.cookie.substring(offset, endstr));
	}



	function FixCookieDate (date) {
	  var base = new Date(0);
	  var skew = base.getTime(); // dawn of (Unix) time - should be 0
	  if (skew > 0)  // Except on the Mac - ahead of its time
	    date.setTime (date.getTime() - skew);
	}


	function GetCookie (name) {
	  var arg = name + "=";
	  var alen = arg.length;
	  var clen = document.cookie.length;
	  var i = 0;
	  while (i < clen) {
	    var j = i + alen;
	    if (document.cookie.substring(i, j) == arg)
	      return getCookieVal (j);
	    i = document.cookie.indexOf(" ", i) + 1;
	    if (i == 0) break; 
	  }
	  return null;
	}


	function SetCookie (name,value,expires,path,domain,secure) {
	  document.cookie = name + "=" + escape (value) +
	    ((expires) ? "; expires=" + expires.toGMTString() : "") +
	    ((path) ? "; path=" + path : "") +
	    ((domain) ? "; domain=" + domain : "") +
	    ((secure) ? "; secure" : "");
	}



	function DeleteCookie (name,path,domain) {

	var cookie_date = new Date ( );  // current date & time
	cookie_date.setTime ( cookie_date.getTime() - 1 );



	  if (GetCookie(name)) {
	    document.cookie = name + "=" +
	      ((path) ? "; path=" + path : "") +
	      ((domain) ? "; domain=" + domain : "") +
	      "; expires=" + cookie_date.toGMTString();
	  }
	}




	//quuery string parse examples
	//var qs = new Querystring();
	//var v1 = qs.get("Directory");


	function Querystring(qs) { // optionally pass a querystring to parse
		this.params = new Object()
		this.get=Querystring_get
	
		if (qs == null)
		qs=location.search.substring(1,location.search.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, ' ')
		var args = qs.split('&') // parse out name/value pairs separated via &
	
	// 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
	}