div.style.width = this.area.w + 'px';
div.style.height = this.attr_('titleHeight') + 'px';
div.style.textAlign = 'center';
div.style.width = this.area.w + 'px';
div.style.height = this.attr_('titleHeight') + 'px';
div.style.textAlign = 'center';
div.style.fontWeight = 'bold';
var class_div = document.createElement("div");
class_div.className = 'dygraph-label dygraph-title';
div.style.fontWeight = 'bold';
var class_div = document.createElement("div");
class_div.className = 'dygraph-label dygraph-title';