$ = null;

Function.prototype.extendNativeFunctionObject = jQuery.extend;

jQuery.getOne = function(s, context) {
	var rt;

	if (typeof s == 'object') {
		rt = s;
	}
	else if (typeof s == 'string') {
		if (s.search(/^[#.]/) == -1) {
			s = '#' + s;
		}

		if (context == null) {
			rt = jQuery(s);
		}
		else {
			rt = jQuery(s, context);
		}

		if (rt.length > 0) {
			rt = rt.get(0);
		}
		else {
			rt = null;
		}
	}

	return rt;
};

jQuery.fn.getOne = function(s) {
	return jQuery.getOne(s, this);
};

Liferay = function() {
	var $ = jQuery;

	return {};
}();

jQuery.fn.exactHeight = jQuery.fn.height;
jQuery.fn.exactWidth = jQuery.fn.width;

jQuery.each( [ 'height', 'width' ], function(i,n){
	jQuery.fn[ n ] = function(h) {
		return h == undefined ?
			( this.length ? (n == 'height' ? this[0].offsetHeight : this[0].offsetWidth) : null ) :
			this.css( n, h.constructor == String ? h : h + "px" );
	};
});