code: function ( begin_props, finish_props ) {
          var b_props = ( begin_props )? $B.style.parse( begin_props ) : [],
              f_props = $B.style.parse( finish_props ), n;
  
          for ( n in f_props ) {
              var f_property = f_props[n],
                  b_property = b_props[n];
  
              if ( !b_property ) b_property = this._getTweenStyle( this._target, f_property );
              //Color
              if( f_property.name.indexOf('color') > -1 ) {
                  var cType = $B.color.type( f_property.value );
  
                  if ( $B.ua.DOC_MODE_IE9_LT && cType == 'rgba' ) cType = 'rgb';
  
                  f_property.unit = 'color';
                  f_property.colorType = cType;
              } else {
                  b_property.value = Number( b_property.value );
                  f_property.value = Number( f_property.value ) - b_property.value;
              }
  
              //Scroll
              var cName = $B.string.camelCase( b_property.name );
              if ( cName == 'scrollTop' || cName == 'scrollLeft' ) {
                  b_property.name = cName;
                  f_property.name = $B.string.camelCase( f_property.name );
              }
  
              this._addProperty( b_property, f_property );
          }
          return this;
      }
docs: 스타일 속성들 추가<br>
  예)'width: 100px; z-index: 3;'
  @param	{String}	begin_props
  @param	{String}	finish_props
  @return	this