Acme-MUDLike

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lib/Acme/MUDLike.pm  view on Meta::CPAN

package Acme::MUDLike;

use 5.008000;
use strict;
use warnings;

use Continuity;
use Carp;
use Devel::Pointer;

our $VERSION = '0.04';

# Todo:
# 
# *  what would be *really* cool is doing on the fly image generation to draw an overhead map of the program based on a 
#    graph of which objects reference which other objects and let people go walk around inside of their program
#    and then they could fight methods and use global variables as weapons!
#
# * http://zvtm.sourceforge.net/zgrviewer.html or something similar for showing the user the "map" of
#   nodes/rooms/whatever made of has-a references or something.
# 
# * /goto should put you inside an arbitrary object, /look should list as exits and/or items the object references contained by that object
#   in other words, break away from our rigid API for inventory/room/etc.
# 
# * need a black list black list, so we can re-add ourself to things that get serialized by Acme::State even though we're in %INC
# 
# * need an error log viewabe by all.
# 
# * eval and its output should be sent to the whole room.
# 
# * Better account management.
# 
# * There's code around to parse LPC and convert it to Perl.  It would be neat to offer a full blown 2.4.5
#   lib for people to play around in.
# 
# * Acme::IRCLike would probably be more popular -- bolt an IRC server onto your app.
# 
# * Also, a telnet interface beyond just an HTTP interface would be nice.  Should be easy to do.
# 
# * Let "players" wander between apps.  Offer RPC to support this.
# 
# * Optionally take an existing Continuity instance with path_session set and optionally parameters
#   for the paths to use for chat pull and commands.
#   Not sure how to work this; each path gets its own coroutine, but there is still only one main().
#   Continuity doesn't have a registry of which paths go to which callbacks.
# 
# Done:
# 
# * mark/call commands should have a current object register, so you can do /call thingie whatever /next and then be calling 
#   into the object returned by thingie->whatever
# 
# * /list (like look, but with stringified object references)
# 
# * /mark <n>  ... or... /mark <stringified obj ref>
# 
# * messages still in duplicate when the same player logs in twice; make room's tell_object operate uniquely.
# 
# * messages in triplicate because each player has three routines and is inserted into the floor three times.  oops.
# 
# * build the ajax.chat.js into source. -- okay, test.
# 
# * eval, call
# 
# * inventory's insert() method should set the insertee's environment to itself.  that way, all objects have an environment.
# 
# * Commands need to do $floor->tell_object or $self->tell_object rather than output directly.
# 
# * Put @messages into the room ($floor).  Get the chat action out of the main loop.  Dispatch all
#   actions.  Maybe.
# 

our $password; # Acme::State friendly
our $floor;    # holds all other objects
our $players;  # holds all players; kind of like $floor except in the future, inactive players might get removed from the floor, or there might be multiple rooms

my $continuity;
my $got_message;   # diddled to wake the chat event watchers

lib/Acme/MUDLike.pm  view on Meta::CPAN

  document.getElementById('status').innerHTML = 'Polling ('+(poll_count++)+')...';
  do_request('/pushstream/?nick=' + nick + '&admin=' + admin, got_update);
}

function got_update(txt) {
  document.getElementById('status').innerHTML = 'Got update.'
  if(document.getElementById("log").innerHTML != txt)
    document.getElementById("log").innerHTML = txt;
  setup_poll();
}

// This stuff gets executed once the document is loaded
$(function(){
  // Start up the long-pull cycle
  setup_poll();
  // Unobtrusively make submitting a message use send_message()
  $('#f').submit(send_message);
});

// We also send messages using AJAX
function send_message() {
  var nick = $('#nick').val();
  var admin = $('#admin').val();
  var message = $('#message').val();
  $('#log').load('/sendmessage', {
    nick:     nick,
    admin:    admin,
    action:   'ajaxchat',
    message:  message
  }, function() {
    $('#message').val('');
    $('#message').focus();
  });
  return false;
}

EOF

}

sub jquery {

return <<'EOF';

/* prevent execution of jQuery if included more than once */
if(typeof window.jQuery == "undefined") {
/*
 * jQuery 1.1.2 - New Wave Javascript
 *
 * Copyright (c) 2007 John Resig (jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * $Date: 2007-02-28 12:03:00 -0500 (Wed, 28 Feb 2007) $
 * $Rev: 1465 $
 */

// Global undefined variable
window.undefined = window.undefined;
var jQuery = function(a,c) {
	// If the context is global, return a new object
	if ( window == this )
		return new jQuery(a,c);

	// Make sure that a selection was provided
	a = a || document;
	
	// HANDLE: $(function)
	// Shortcut for document ready
	if ( jQuery.isFunction(a) )
		return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( a );
	
	// Handle HTML strings
	if ( typeof a  == "string" ) {
		// HANDLE: $(html) -> $(array)
		var m = /^[^<]*(<(.|\s)+>)[^>]*$/.exec(a);
		if ( m )
			a = jQuery.clean( [ m[1] ] );
		
		// HANDLE: $(expr)
		else
			return new jQuery( c ).find( a );
	}
	
	return this.setArray(
		// HANDLE: $(array)
		a.constructor == Array && a ||

		// HANDLE: $(arraylike)
		// Watch for when an array-like object is passed as the selector
		(a.jquery || a.length && a != window && !a.nodeType && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||

		// HANDLE: $(*)
		[ a ] );
};

// Map over the $ in case of overwrite
if ( typeof $ != "undefined" )
	jQuery._$ = $;
	
// Map the jQuery namespace to the '$' one
var $ = jQuery;

jQuery.fn = jQuery.prototype = {
	jquery: "1.1.2",

	size: function() {
		return this.length;
	},
	
	length: 0,

	get: function( num ) {
		return num == undefined ?

			// Return a 'clean' array
			jQuery.makeArray( this ) :

			// Return just the object
			this[num];
	},

lib/Acme/MUDLike.pm  view on Meta::CPAN

				ret = r;
				t = t.replace( re, "" );
				if ( t.indexOf(" ") == 0 ) continue;
				foundToken = true;
			} else {
				// Look for pre-defined expression tokens
				for ( var i = 0; i < jQuery.token.length; i += 2 ) {
					// Attempt to match each, individual, token in
					// the specified order
					var re = jQuery.token[i];
					var m = re.exec(t);

					// If the token match was found
					if ( m ) {
						// Map it against the token's handler
						r = ret = jQuery.map( ret, jQuery.isFunction( jQuery.token[i+1] ) ?
							jQuery.token[i+1] :
							function(a){ return eval(jQuery.token[i+1]); });

						// And remove the token
						t = jQuery.trim( t.replace( re, "" ) );
						foundToken = true;
						break;
					}
				}
			}

			// See if there's still an expression, and that we haven't already
			// matched a token
			if ( t && !foundToken ) {
				// Handle multiple expressions
				if ( !t.indexOf(",") ) {
					// Clean the result set
					if ( ret[0] == context ) ret.shift();

					// Merge the result sets
					jQuery.merge( done, ret );

					// Reset the context
					r = ret = [context];

					// Touch up the selector string
					t = " " + t.substr(1,t.length);

				} else {
					// Optomize for the case nodeName#idName
					var re2 = /^([a-z0-9_-]+)(#)([a-z0-9\\*_-]*)/i;
					var m = re2.exec(t);
					
					// Re-organize the results, so that they're consistent
					if ( m ) {
					   m = [ 0, m[2], m[3], m[1] ];

					} else {
						// Otherwise, do a traditional filter check for
						// ID, class, and element selectors
						re2 = /^([#.]?)([a-z0-9\\*_-]*)/i;
						m = re2.exec(t);
					}

					// Try to do a global search by ID, where we can
					if ( m[1] == "#" && ret[ret.length-1].getElementById ) {
						// Optimization for HTML document case
						var oid = ret[ret.length-1].getElementById(m[2]);
						
						// Do a quick check for the existence of the actual ID attribute
						// to avoid selecting by the name attribute in IE
						if ( jQuery.browser.msie && oid && oid.id != m[2] )
							oid = jQuery('[@id="'+m[2]+'"]', ret[ret.length-1])[0];

						// Do a quick check for node name (where applicable) so
						// that div#foo searches will be really fast
						ret = r = oid && (!m[3] || jQuery.nodeName(oid, m[3])) ? [oid] : [];

					} else {
						// Pre-compile a regular expression to handle class searches
						if ( m[1] == "." )
							var rec = new RegExp("(^|\\s)" + m[2] + "(\\s|$)");

						// We need to find all descendant elements, it is more
						// efficient to use getAll() when we are already further down
						// the tree - we try to recognize that here
						jQuery.each( ret, function(){
							// Grab the tag name being searched for
							var tag = m[1] != "" || m[0] == "" ? "*" : m[2];

							// Handle IE7 being really dumb about <object>s
							if ( jQuery.nodeName(this, "object") && tag == "*" )
								tag = "param";

							jQuery.merge( r,
								m[1] != "" && ret.length != 1 ?
									jQuery.getAll( this, [], m[1], m[2], rec ) :
									this.getElementsByTagName( tag )
							);
						});

						// It's faster to filter by class and be done with it
						if ( m[1] == "." && ret.length == 1 )
							r = jQuery.grep( r, function(e) {
								return rec.test(e.className);
							});

						// Same with ID filtering
						if ( m[1] == "#" && ret.length == 1 ) {
							// Remember, then wipe out, the result set
							var tmp = r;
							r = [];

							// Then try to find the element with the ID
							jQuery.each( tmp, function(){
								if ( this.getAttribute("id") == m[2] ) {
									r = [ this ];
									return false;
								}
							});
						}

						ret = r;
					}

lib/Acme/MUDLike.pm  view on Meta::CPAN

		for ( ; cur; cur = cur[dir] ) {
			if ( cur.nodeType == 1 ) num++;
			if ( num == result || result == "even" && num % 2 == 0 && num > 1 && cur == elem ||
				result == "odd" && num % 2 == 1 && cur == elem ) return cur;
		}
	},
	sibling: function( n, elem ) {
		var r = [];

		for ( ; n; n = n.nextSibling ) {
			if ( n.nodeType == 1 && (!elem || n != elem) )
				r.push( n );
		}

		return r;
	}
});
/*
 * A number of helper functions used for managing events.
 * Many of the ideas behind this code orignated from 
 * Dean Edwards' addEvent library.
 */
jQuery.event = {

	// Bind an event to an element
	// Original by Dean Edwards
	add: function(element, type, handler, data) {
		// For whatever reason, IE has trouble passing the window object
		// around, causing it to be cloned in the process
		if ( jQuery.browser.msie && element.setInterval != undefined )
			element = window;

		// if data is passed, bind to handler
		if( data ) 
			handler.data = data;

		// Make sure that the function being executed has a unique ID
		if ( !handler.guid )
			handler.guid = this.guid++;

		// Init the element's event structure
		if (!element.$events)
			element.$events = {};

		// Get the current list of functions bound to this event
		var handlers = element.$events[type];

		// If it hasn't been initialized yet
		if (!handlers) {
			// Init the event handler queue
			handlers = element.$events[type] = {};

			// Remember an existing handler, if it's already there
			if (element["on" + type])
				handlers[0] = element["on" + type];
		}

		// Add the function to the element's handler list
		handlers[handler.guid] = handler;

		// And bind the global event handler to the element
		element["on" + type] = this.handle;

		// Remember the function in a global list (for triggering)
		if (!this.global[type])
			this.global[type] = [];
		this.global[type].push( element );
	},

	guid: 1,
	global: {},

	// Detach an event or set of events from an element
	remove: function(element, type, handler) {
		if (element.$events) {
			var i,j,k;
			if ( type && type.type ) { // type is actually an event object here
				handler = type.handler;
				type    = type.type;
			}
			
			if (type && element.$events[type])
				// remove the given handler for the given type
				if ( handler )
					delete element.$events[type][handler.guid];
					
				// remove all handlers for the given type
				else
					for ( i in element.$events[type] )
						delete element.$events[type][i];
						
			// remove all handlers		
			else
				for ( j in element.$events )
					this.remove( element, j );
			
			// remove event handler if no more handlers exist
			for ( k in element.$events[type] )
				if (k) {
					k = true;
					break;
				}
			if (!k) element["on" + type] = null;
		}
	},

	trigger: function(type, data, element) {
		// Clone the incoming data, if any
		data = jQuery.makeArray(data || []);

		// Handle a global trigger
		if ( !element )
			jQuery.each( this.global[type] || [], function(){
				jQuery.event.trigger( type, data, this );
			});

		// Handle triggering a single element
		else {
			var handler = element["on" + type ], val,
				fn = jQuery.isFunction( element[ type ] );

			if ( handler ) {
				// Pass along a fake event
				data.unshift( this.fix({ type: type, target: element }) );
	
				// Trigger the event
				if ( (val = handler.apply( element, data )) !== false )
					this.triggered = true;
			}

			if ( fn && val !== false )
				element[ type ]();

			this.triggered = false;
		}
	},

	handle: function(event) {
		// Handle the second event of a trigger and when
		// an event is called after a page has unloaded
		if ( typeof jQuery == "undefined" || jQuery.event.triggered ) return;

		// Empty object is for triggered events with no data
		event = jQuery.event.fix( event || window.event || {} ); 

		// returned undefined or false
		var returnValue;

		var c = this.$events[event.type];

		var args = [].slice.call( arguments, 1 );
		args.unshift( event );

		for ( var j in c ) {
			// Pass in a reference to the handler function itself
			// So that we can later remove it
			args[0].handler = c[j];
			args[0].data = c[j].data;

			if ( c[j].apply( this, args ) === false ) {
				event.preventDefault();
				event.stopPropagation();
				returnValue = false;
			}
		}

		// Clean up added properties in IE to prevent memory leak
		if (jQuery.browser.msie) event.target = event.preventDefault = event.stopPropagation = event.handler = event.data = null;

		return returnValue;
	},

	fix: function(event) {

lib/Acme/MUDLike.pm  view on Meta::CPAN

		
		// Handle event binding
		jQuery.fn[o] = function(f){
			return f ? this.bind(o, f) : this.trigger(o);
		};
			
	});
	
	// If Mozilla is used
	if ( jQuery.browser.mozilla || jQuery.browser.opera )
		// Use the handy event callback
		document.addEventListener( "DOMContentLoaded", jQuery.ready, false );
	
	// If IE is used, use the excellent hack by Matthias Miller
	// http://www.outofhanwell.com/blog/index.php?title=the_window_onload_problem_revisited
	else if ( jQuery.browser.msie ) {
	
		// Only works if you document.write() it
		document.write("<scr" + "ipt id=__ie_init defer=true " + 
			"src=//:><\/script>");
	
		// Use the defer script hack
		var script = document.getElementById("__ie_init");
		
		// script does not exist if jQuery is loaded dynamically
		if ( script ) 
			script.onreadystatechange = function() {
				if ( this.readyState != "complete" ) return;
				this.parentNode.removeChild( this );
				jQuery.ready();
			};
	
		// Clear from memory
		script = null;
	
	// If Safari  is used
	} else if ( jQuery.browser.safari )
		// Continually check to see if the document.readyState is valid
		jQuery.safariTimer = setInterval(function(){
			// loaded and complete are both valid states
			if ( document.readyState == "loaded" || 
				document.readyState == "complete" ) {
	
				// If either one are found, remove the timer
				clearInterval( jQuery.safariTimer );
				jQuery.safariTimer = null;
	
				// and execute any waiting functions
				jQuery.ready();
			}
		}, 10); 

	// A fallback to window.onload, that will always work
	jQuery.event.add( window, "load", jQuery.ready );
	
};

// Clean up after IE to avoid memory leaks
if (jQuery.browser.msie)
	jQuery(window).one("unload", function() {
		var global = jQuery.event.global;
		for ( var type in global ) {
			var els = global[type], i = els.length;
			if ( i && type != 'unload' )
				do
					jQuery.event.remove(els[i-1], type);
				while (--i);
		}
	});
jQuery.fn.extend({
	loadIfModified: function( url, params, callback ) {
		this.load( url, params, callback, 1 );
	},
	load: function( url, params, callback, ifModified ) {
		if ( jQuery.isFunction( url ) )
			return this.bind("load", url);

		callback = callback || function(){};

		// Default to a GET request
		var type = "GET";

		// If the second parameter was provided
		if ( params )
			// If it's a function
			if ( jQuery.isFunction( params ) ) {
				// We assume that it's the callback
				callback = params;
				params = null;

			// Otherwise, build a param string
			} else {
				params = jQuery.param( params );
				type = "POST";
			}

		var self = this;

		// Request the remote document
		jQuery.ajax({
			url: url,
			type: type,
			data: params,
			ifModified: ifModified,
			complete: function(res, status){
				if ( status == "success" || !ifModified && status == "notmodified" )
					// Inject the HTML into all the matched elements
					self.attr("innerHTML", res.responseText)
					  // Execute all the scripts inside of the newly-injected HTML
					  .evalScripts()
					  // Execute callback
					  .each( callback, [res.responseText, status, res] );
				else
					callback.apply( self, [res.responseText, status, res] );
			}
		});
		return this;
	},
	serialize: function() {
		return jQuery.param( this );
	},
	evalScripts: function() {
		return this.find("script").each(function(){
			if ( this.src )
				jQuery.getScript( this.src );
			else
				jQuery.globalEval( this.text || this.textContent || this.innerHTML || "" );
		}).end();
	}

});

// If IE is used, create a wrapper for the XMLHttpRequest object
if ( !window.XMLHttpRequest )
	XMLHttpRequest = function(){
		return new ActiveXObject("Microsoft.XMLHTTP");
	};

// Attach a bunch of functions for handling common AJAX events

jQuery.each( "ajaxStart,ajaxStop,ajaxComplete,ajaxError,ajaxSuccess,ajaxSend".split(","), function(i,o){
	jQuery.fn[o] = function(f){
		return this.bind(o, f);
	};
});

jQuery.extend({
	get: function( url, data, callback, type, ifModified ) {
		// shift arguments if data argument was ommited
		if ( jQuery.isFunction( data ) ) {
			callback = data;
			data = null;
		}
		
		return jQuery.ajax({
			url: url,
			data: data,
			success: callback,
			dataType: type,
			ifModified: ifModified
		});
	},
	getIfModified: function( url, data, callback, type ) {
		return jQuery.get(url, data, callback, type, 1);
	},
	getScript: function( url, callback ) {
		return jQuery.get(url, null, callback, "script");
	},
	getJSON: function( url, data, callback ) {
		return jQuery.get(url, data, callback, "json");
	},
	post: function( url, data, callback, type ) {
		if ( jQuery.isFunction( data ) ) {
			callback = data;
			data = {};
		}

		return jQuery.ajax({
			type: "POST",
			url: url,
			data: data,
			success: callback,
			dataType: type
		});
	},

	// timeout (ms)
	//timeout: 0,
	ajaxTimeout: function( timeout ) {
		jQuery.ajaxSettings.timeout = timeout;
	},
	ajaxSetup: function( settings ) {
		jQuery.extend( jQuery.ajaxSettings, settings );
	},

	ajaxSettings: {
		global: true,
		type: "GET",
		timeout: 0,
		contentType: "application/x-www-form-urlencoded",
		processData: true,
		async: true,
		data: null
	},
	
	// Last-Modified header cache for next request
	lastModified: {},
	ajax: function( s ) {
		// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
		s = jQuery.extend({}, jQuery.ajaxSettings, s);

		// if data available
		if ( s.data ) {
			// convert data if not already a string
			if (s.processData && typeof s.data != "string")
    			s.data = jQuery.param(s.data);
			// append data to url for get requests
			if( s.type.toLowerCase() == "get" ) {
				// "?" + data or "&" + data (in case there are already params)
				s.url += ((s.url.indexOf("?") > -1) ? "&" : "?") + s.data;
				// IE likes to send both get and post data, prevent this
				s.data = null;
			}
		}

		// Watch for a new set of requests
		if ( s.global && ! jQuery.active++ )
			jQuery.event.trigger( "ajaxStart" );

		var requestDone = false;

		// Create the request object
		var xml = new XMLHttpRequest();

		// Open the socket
		xml.open(s.type, s.url, s.async);

		// Set the correct header, if data is being sent
		if ( s.data )
			xml.setRequestHeader("Content-Type", s.contentType);

		// Set the If-Modified-Since header, if ifModified mode.
		if ( s.ifModified )
			xml.setRequestHeader("If-Modified-Since",
				jQuery.lastModified[s.url] || "Thu, 01 Jan 1970 00:00:00 GMT" );

		// Set header so the called script knows that it's an XMLHttpRequest
		xml.setRequestHeader("X-Requested-With", "XMLHttpRequest");

		// Make sure the browser sends the right content length
		if ( xml.overrideMimeType )
			xml.setRequestHeader("Connection", "close");
			
		// Allow custom headers/mimetypes
		if( s.beforeSend )
			s.beforeSend(xml);
			
		if ( s.global )
		    jQuery.event.trigger("ajaxSend", [xml, s]);

		// Wait for a response to come back
		var onreadystatechange = function(isTimeout){
			// The transfer is complete and the data is available, or the request timed out
			if ( xml && (xml.readyState == 4 || isTimeout == "timeout") ) {
				requestDone = true;
				
				// clear poll interval
				if (ival) {
					clearInterval(ival);
					ival = null;
				}
				
				var status;
				try {
					status = jQuery.httpSuccess( xml ) && isTimeout != "timeout" ?
						s.ifModified && jQuery.httpNotModified( xml, s.url ) ? "notmodified" : "success" : "error";
					// Make sure that the request was successful or notmodified
					if ( status != "error" ) {
						// Cache Last-Modified header, if ifModified mode.
						var modRes;
						try {
							modRes = xml.getResponseHeader("Last-Modified");
						} catch(e) {} // swallow exception thrown by FF if header is not available
	
						if ( s.ifModified && modRes )
							jQuery.lastModified[s.url] = modRes;
	
						// process the data (runs the xml through httpData regardless of callback)
						var data = jQuery.httpData( xml, s.dataType );
	
						// If a local callback was specified, fire it and pass it the data
						if ( s.success )
							s.success( data, status );
	
						// Fire the global callback
						if( s.global )
							jQuery.event.trigger( "ajaxSuccess", [xml, s] );
					} else
						jQuery.handleError(s, xml, status);
				} catch(e) {
					status = "error";
					jQuery.handleError(s, xml, status, e);
				}

				// The request was completed
				if( s.global )
					jQuery.event.trigger( "ajaxComplete", [xml, s] );

				// Handle the global AJAX counter
				if ( s.global && ! --jQuery.active )
					jQuery.event.trigger( "ajaxStop" );

				// Process result
				if ( s.complete )
					s.complete(xml, status);

				// Stop memory leaks
				if(s.async)
					xml = null;
			}
		};
		
		// don't attach the handler to the request, just poll it instead
		var ival = setInterval(onreadystatechange, 13); 

		// Timeout checker
		if ( s.timeout > 0 )
			setTimeout(function(){
				// Check to see if the request is still happening
				if ( xml ) {
					// Cancel the request
					xml.abort();

					if( !requestDone )
						onreadystatechange( "timeout" );
				}
			}, s.timeout);
			
		// Send the data
		try {
			xml.send(s.data);
		} catch(e) {
			jQuery.handleError(s, xml, null, e);
		}
		
		// firefox 1.5 doesn't fire statechange for sync requests
		if ( !s.async )
			onreadystatechange();
		
		// return XMLHttpRequest to allow aborting the request etc.
		return xml;
	},

	handleError: function( s, xml, status, e ) {
		// If a local callback was specified, fire it
		if ( s.error ) s.error( xml, status, e );

		// Fire the global callback
		if ( s.global )
			jQuery.event.trigger( "ajaxError", [xml, s, e] );
	},

	// Counter for holding the number of active queries
	active: 0,

	// Determines if an XMLHttpRequest was successful or not
	httpSuccess: function( r ) {
		try {
			return !r.status && location.protocol == "file:" ||
				( r.status >= 200 && r.status < 300 ) || r.status == 304 ||
				jQuery.browser.safari && r.status == undefined;
		} catch(e){}
		return false;
	},

	// Determines if an XMLHttpRequest returns NotModified
	httpNotModified: function( xml, url ) {
		try {
			var xmlRes = xml.getResponseHeader("Last-Modified");

			// Firefox always returns 200. check Last-Modified date
			return xml.status == 304 || xmlRes == jQuery.lastModified[url] ||
				jQuery.browser.safari && xml.status == undefined;
		} catch(e){}
		return false;
	},

	/* Get the data out of an XMLHttpRequest.
	 * Return parsed XML if content-type header is "xml" and type is "xml" or omitted,
	 * otherwise return plain text.
	 * (String) data - The type of data that you're expecting back,
	 * (e.g. "xml", "html", "script")
	 */
	httpData: function( r, type ) {
		var ct = r.getResponseHeader("content-type");
		var data = !type && ct && ct.indexOf("xml") >= 0;
		data = type == "xml" || data ? r.responseXML : r.responseText;

		// If the type is "script", eval it in global context
		if ( type == "script" )
			jQuery.globalEval( data );

		// Get the JavaScript object, if JSON is used.
		if ( type == "json" )
			eval( "data = " + data );

		// evaluate scripts within html
		if ( type == "html" )
			jQuery("<div>").html(data).evalScripts();

		return data;
	},

	// Serialize an array of form elements or a set of
	// key/values into a query string
	param: function( a ) {
		var s = [];

		// If an array was passed in, assume that it is an array
		// of form elements
		if ( a.constructor == Array || a.jquery )
			// Serialize the form elements
			jQuery.each( a, function(){
				s.push( encodeURIComponent(this.name) + "=" + encodeURIComponent( this.value ) );
			});

		// Otherwise, assume that it's an object of key/value pairs
		else
			// Serialize the key/values
			for ( var j in a )
				// If the value is an array then the key names need to be repeated
				if ( a[j] && a[j].constructor == Array )
					jQuery.each( a[j], function(){
						s.push( encodeURIComponent(j) + "=" + encodeURIComponent( this ) );
					});
				else
					s.push( encodeURIComponent(j) + "=" + encodeURIComponent( a[j] ) );

		// Return the resulting serialization
		return s.join("&");
	},
	
	// evalulates a script in global context
	// not reliable for safari
	globalEval: function( data ) {
		if ( window.execScript )
			window.execScript( data );
		else if ( jQuery.browser.safari )
			// safari doesn't provide a synchronous global eval
			window.setTimeout( data, 0 );
		else
			eval.call( window, data );
	}

});
jQuery.fn.extend({

	show: function(speed,callback){
		var hidden = this.filter(":hidden");
		speed ?
			hidden.animate({
				height: "show", width: "show", opacity: "show"
			}, speed, callback) :
			
			hidden.each(function(){
				this.style.display = this.oldblock ? this.oldblock : "";
				if ( jQuery.css(this,"display") == "none" )
					this.style.display = "block";
			});
		return this;
	},

	hide: function(speed,callback){
		var visible = this.filter(":visible");
		speed ?
			visible.animate({
				height: "hide", width: "hide", opacity: "hide"
			}, speed, callback) :
			
			visible.each(function(){
				this.oldblock = this.oldblock || jQuery.css(this,"display");
				if ( this.oldblock == "none" )
					this.oldblock = "block";
				this.style.display = "none";
			});
		return this;
	},

	// Save the old toggle function
	_toggle: jQuery.fn.toggle,
	toggle: function( fn, fn2 ){
		var args = arguments;
		return jQuery.isFunction(fn) && jQuery.isFunction(fn2) ?
			this._toggle( fn, fn2 ) :
			this.each(function(){
				jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]
					.apply( jQuery(this), args );
			});
	},
	slideDown: function(speed,callback){
		return this.animate({height: "show"}, speed, callback);
	},
	slideUp: function(speed,callback){
		return this.animate({height: "hide"}, speed, callback);
	},
	slideToggle: function(speed, callback){
		return this.each(function(){
			var state = jQuery(this).is(":hidden") ? "show" : "hide";
			jQuery(this).animate({height: state}, speed, callback);



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