// JScript File

  ///////////////////////////////////////////////////////////////////////////////////////////////////////////////
   // cookies and querystrings !
   
   function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
	}

	function readCookie(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		}
		return null;
	}
	
	function eraseCookie(name) {
		createCookie(name,"",-1);
	}
	
	
	
	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_) 
	{
	    Querystring();
		// 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
	}