code: function() {
  		if ( this.elem[ this.prop ] != null && (!this.elem.style || this.elem.style[ this.prop ] == null) ) {
  			return this.elem[ this.prop ];
  		}
  
  		var parsed,
  			r = jQuery.css( this.elem, this.prop );
  		// Empty strings, null, undefined and "auto" are converted to 0,
  		// complex values such as "rotate(1rad)" are returned as is,
  		// simple values such as "10px" are parsed to Float.
  		return isNaN( parsed = parseFloat( r ) ) ? !r || r === "auto" ? 0 : r : parsed;
  	}
docs: Get the current size