src/jquery.nstSlider.js
function () {
            var $this = this,
                lowerLimit = $this.data('lower-limit'),
                upperLimit = $this.data('upper-limit'),
                haveLimits = false;

            if (typeof lowerLimit !== 'undefined' && 
                typeof upperLimit !== 'undefined') {
                
                haveLimits = true;
            }

            return haveLimits;
        }
function () {
            var $this = this,
                lowerLimit = $this.data('lower-limit'),
                upperLimit = $this.data('upper-limit'),
                haveLimits = false;

            if (typeof lowerLimit !== 'undefined' && 
                typeof upperLimit !== 'undefined') {
                
                haveLimits = true;
            }

            return haveLimits;
        }
/*
Returns true if this slider has limit, false otherwise. There can be
an upper limit and a lower limit for the sliders.
The lower/upper limits are values that are out of the slider range,
but that can be selected by the user when he moves a slider all the
way down the minimum and up to the maximum value.