docs: function (px) {
          if (this.div == null) {
              this.div = OpenLayers.Util.createDiv(this.id);
              this.div.className = this.displayClass;
              if (!this.allowSelection) {
                  this.div.className += " olControlNoSelect";
                  this.div.setAttribute("unselectable", "on", 0);
                  this.div.onselectstart = OpenLayers.Function.False; 
              }    
              if (this.title != "") {
                  this.div.title = this.title;
              }
          }
          if (px != null) {
              this.position = px.clone();
          }
          this.moveTo(this.position);
          return this.div;
      }