redraw: function () {
    this.container.style.backgroundImage = 'url("' + this.graphicUrl() + '")';
    this.maxContainer.innerHTML = round(this.max, this.getDecimalPrecision());
    this.midContainer.innerHTML = round(this.getMidpoint(this.min, this.max, this.layer.wmsParams.logscale), this.getDecimalPrecision());
    this.minContainer.innerHTML = round(this.min, this.getDecimalPrecision());