// Getter Class
Getter = Class.create();
Getter.prototype = {
	initialize : function(options) {
		this._setOptions(options);
		
		if (this.options.isCentered) {
			this.center();
		}
	},
	
	_setOptions: function(options) {
		this.options = {
			onLoadingFunc   : function(json) {},
			onSuccessFunc   : function(json) {},
			onCompleteFunc  : function(json) {},
			onFailureFunc   : function(json) {},
			onExceptionFunc : function(json) {},
			uri             : '',
			responce        : 'html',
			method          : 'get',
			requestHeaders  : ['If-Modified-Since','Wed, 15 Nov 1995 00:00:00 GMT']
		}
		Object.extend(this.options, options || {});
	},
	get : function(uri, params) {
		var onLoadingFunc   = this.options.onLoadingFunc;
		var onSuccessFunc   = this.options.onSuccessFunc;
		var onCompleteFunc  = this.options.onCompleteFunc;
		var onFailureFunc   = this.options.onFailureFunc;
		var onExceptionFunc = this.options.onExceptionFunc;
		
		var responce = this.options.responce;
		
		if(uri) this.options.uri = uri;
		
		var funcs = {
			onLoading : onLoadingFunc,
			onSuccess : function(res) {
				if(responce == 'json') {
					var json = eval('(' + res.responseText + ')');
					
					if(json.error != -1) {
						onSuccessFunc(json);
					}
					else {
						onFailureFunc(json);
					}
				}
				else {
					onSuccessFunc(res.responseText);
				}
			},
			onComplete  : onCompleteFunc,
			onException : onExceptionFunc
		};
		
		this._request(params, funcs);
	},
	_request : function(params, funcs) {
		var ajaxOptions = {
			method         : this.options.method,
			requestHeaders : this.options.requestHeaders,
			postBody       : params,
			onLoading      : funcs.onLoading,
			onSuccess      : funcs.onSuccess,
			onComplete     : funcs.onComplete,
			onFailure      : funcs.onFailure,
			onException    : funcs.onException
		};
		
		new Ajax.Request(this.options.uri, ajaxOptions);
	}
};

// Center Class
Center = Class.create();
Center.create = function(options) {
	return (new Center(options));
}
Center.prototype = {
	initialize : function(options) {
		this._setOptions(options);
	},
	_setOptions: function(options) {
		this.options = {
			id : ''
		}
		Object.extend(this.options, options || {});
	},
	both : function() {
		this.top();
		this.left();
	},
	setY : function() {
		var dimensions = Element.getDimensions($(this.options.id));
		Position.prepare();
		var offsetTop = (Position.deltaY + Math.floor((this._getWindowHeight() - dimensions.height) / 2));
		
		Element.setStyle($(this.options.id), {
			position : 'absolute',
			//top      : ((dimensions.height <= this._getWindowHeight()) ? ((offsetTop  != null && offsetTop  > 0) ? offsetTop  : '0') + 'px' : 0),
			top      : ((offsetTop  != null && offsetTop  > 0) ? offsetTop  : '0') + 'px'
		});
	},
	top : function() {
		var dimensions = Element.getDimensions($(this.options.id));
		Position.prepare();
		var offsetTop = Position.deltaY;
		
		Element.setStyle($(this.options.id), {
			position : 'absolute',
			//top      : ((dimensions.height <= this._getWindowHeight()) ? ((offsetTop  != null && offsetTop  > 0) ? offsetTop  : '0') + 'px' : 0),
			top      : ((offsetTop  != null && offsetTop  > 0) ? offsetTop  : '0') + 'px'
		});
	},
	setX : function() {
		var dimensions = Element.getDimensions($(this.options.id));
		Position.prepare();
		var offsetLeft = (Position.deltaX + Math.floor((this._getWindowWidth() - dimensions.width) / 2));
		
		Element.setStyle($(this.options.id), {
			position : 'absolute',
			left     : ((dimensions.width  <= this._getWindowWidth())  ? ((offsetLeft != null && offsetLeft > 0) ? offsetLeft : '0') + 'px' : 0)
		});
	},
	left : function() {
		var dimensions = Element.getDimensions($(this.options.id));
		Position.prepare();
		var offsetLeft = Position.deltaX;
		
		Element.setStyle($(this.options.id), {
			position : 'absolute',
			left     : ((dimensions.width  <= this._getWindowWidth())  ? ((offsetLeft != null && offsetLeft > 0) ? offsetLeft : '0') + 'px' : 0)
		});
	},
	overlay : function() {
		Element.setStyle($(this.options.id), {
			position : 'absolute',
			top      : 0,
			left     : 0,
			height   : (this._getDocumentHeight() + 2000) + 'px',
			//height   : this._getDocumentHeight() + 'px',
			width    : this._getDocumentWidth() + 'px'
		});
	},
	_getWindowWidth : function() {
		return (self.innerWidth || document.documentElement.clientWidth || document.body.clientWidth || 0);
	},
	_getWindowHeight : function() {
		return (self.innerHeight || document.documentElement.clientHeight || document.body.clientHeight || 0);
	},
	_getDocumentWidth: function(){
		return Math.max(document.body.scrollWidth, this._getWindowWidth());
	},
	_getDocumentHeight: function(){
		return Math.max(document.body.scrollHeight, this._getWindowHeight());
	}
};