;( function ( $ ){
  $.fn.addback = $.fn.addback || $.fn.andself;

  $.fn.extend({

    actual : function ( method, options ){
      // check if the jquery method exist
      if( !this[ method ]){
        throw '$.actual => the jquery method "' + method + '" you called does not exist';
      }

      var defaults = {
        absolute      : false,
        clone         : false,
        includemargin : false,
        display       : 'block'
      };

      var configs = $.extend( defaults, options );

      var $target = this.eq( 0 );
      var fix, restore;

      if( configs.clone === true ){
        fix = function (){
          var style = 'position: absolute !important; top: -1000 !important; ';

          // this is useful with css3pie
          $target = $target.
            clone().
            attr( 'style', style ).
            appendto( 'body' );
        };

        restore = function (){
          // remove dom element after getting the width
          $target.remove();
        };
      }else{
        var tmp   = [];
        var style = '';
        var $hidden;

        fix = function (){
          // get all hidden parents
          $hidden = $target.parents().addback().filter( ':hidden' );
          style   += 'visibility: hidden !important; display: ' + configs.display + ' !important; ';

          if( configs.absolute === true ) style += 'position: absolute !important; ';

          // save the origin style props
          // set the hidden el css to be got the actual value later
          $hidden.each( function (){
            // save original style. if no style was set, attr() returns undefined
            var $this     = $( this );
            var thisstyle = $this.attr( 'style' );

            tmp.push( thisstyle );
            // retain as much of the original style as possible, if there is one
            $this.attr( 'style', thisstyle ? thisstyle + ';' + style : style );
          });
        };

        restore = function (){
          // restore origin style values
          $hidden.each( function ( i ){
            var $this = $( this );
            var _tmp  = tmp[ i ];

            if( _tmp === undefined ){
              $this.removeattr( 'style' );
            }else{
              $this.attr( 'style', _tmp );
            }
          });
        };
      }

      fix();
      // get the actual value with user specific methed
      // it can be 'width', 'height', 'outerwidth', 'innerwidth'... etc
      // configs.includemargin only works for 'outerwidth' and 'outerheight'
      var actual = /(outer)/.test( method ) ?
        $target[ method ]( configs.includemargin ) :
        $target[ method ]();

      restore();
      // important, this plugin only return the value of the first element
      return actual;
    }
  });
})(jquery);