//	userid and type of the object to send the message to
//	parameters must contain at least:
//	- obj: the link that is clicked
//	- friendid: the id of the third party object (user, network...)
//	
//	Optional parameters are:
//	- header_text: the header text of the dialog when using a dialog
//	- button: the button text
//	- button2: an additional button
//	- use_callback will refresh the module containing obj
//	- nodialog will cause the action to occur without showing the dialog
//	- delay_callback will cause the callback to occur only on closing the dialog
//	
//	Methods with a dialog:
//	_______________________________________________________
//	| method                | dialog                      |
//	|_______________________|_____________________________|
//	| edit_membership       | relations_add               |
//	| ban                   | relations_ban               |
//	|_______________________|_____________________________|
//	
//	Methods without a dialog:
//	_________________________
//	| method                |
//	|_______________________|
//	| unban                 |
//	| leave                 |
//	| follow                |
//	| reject                |
//	| approve               |
//	| remove_leader         |
//	| add_leader            |
//	|_______________________|

dex.relation = function(userid, type, parameters) {
	this.process_answer = function(o) {
		var content = o;
		content = content.replace(new RegExp("[\n|\r|\f]", 'gi'),"");
		content = content.replace(new RegExp('<input[^>]+type=["|\']submit[\'|"][^>]*/>', 'gi'), '');
		return content;
	};
	this.process_content = function(content) {
		var method = '';
		var hidden_fields = YAHOO.util.Selector.query('input', content);
		len = hidden_fields.length;
		for(var i = 0; i < len; i++) {
			if (hidden_fields[i].name == 'method') {
				method = hidden_fields[i].value;
				break;
			}
		};

		var form = YAHOO.util.Selector.query('form', content, true);
		form.action = '/' + this.type + '/' + this.userid + '/json/' + method + '/';
	};
	this.callback = function() {
		dex.page.find_module(this.obj).refresh();
	};
	this.edit_membership = function(parameters) {
		this.set_parameters(parameters);
		dex.load.onclick("dex.dialog",function() {
			this.dialog = new dex.dialog(this, this.config);
			this.dialog.load_form('/'+this.type+'/'+this.userid+'/module/relations_add/');	
		},{scope:this})
	};

	this.clear_ban = function(callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/ban/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
		,'friendid='+this.friendid);
	}

	this.ban = function (parameters) {
		this.set_parameters(parameters);
		dex.load.onclick("dex.dialog",function() {
			this.dialog = new dex.dialog(this, this.config);
			this.dialog.load_form('/'+this.type+'/'+this.userid+'/module/relations_ban/?rel=ban&friendid='+this.friendid);	
		},{scope:this});
	};

	this.unban = function (callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/unban/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
		,'friendid='+this.friendid);
	};

	this.leave = function () {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/leave/', {
			success:function(o) {
				this.callback();
			},
			scope: this},
			'friendid='+this.friendid);
	};

	this.follow = function (callbackfn) {
		params = 'friendid='+this.friendid;
		if (typeof(this.mail) != 'undefined') {
			params = params+'&mail='+this.mail
		}
		if (typeof(this.activity) != 'undefined') {
			params = params+'&activity='+this.activity
		}
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/follow/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this},
			params);
	};

	this.reject = function(callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/reject/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
			,'friendid='+this.friendid)
	};

	this.approve = function(callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/approve/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
			,'friendid='+this.friendid)
	};
	this.remove_leader = function(callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/remove_leader/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
			,'friendid='+this.friendid)
	};
	this.add_leader = function(callbackfn) {
		YAHOO.util.Connect.initHeader('X-Signature', dex.hash);
		YAHOO.util.Connect.asyncRequest('POST', '/'+this.type+'/'+this.userid+'/json/add_leader/', {
			success:function(o) {
				if(callbackfn == undefined) {
					this.callback();
				}
				else if (typeof callbackfn == 'function') {
					callbackfn();
				}
			},
			scope: this}
			,'friendid='+this.friendid)
		//this.dialog.load_form('/network/' + this.network + '/module/99/?method=add_leader&user=' + this.user);
	};
	this.set_parameters = function(parameters) {
		for (i in parameters) {
			this[i] = parameters[i];
			this.config[i] = parameters[i];
		}
	};
	this.userid = userid;
	this.type = type;
	this.config = {
		process_answer:true,
		process_content:true,
		dialog_id:'relation_dialog',
		width:'500px'};
	for (i in parameters) {
		this[i] = parameters[i];
		this.config[i] = parameters[i];
	};
}