code: function setWidthToOffsetWidth(p_sType, p_aArgs) {
  
          var oConfig,
              sOriginalWidth,
              sNewWidth;
  
          if (bIEQuirks) {
  
              oConfig = this.cfg;
              sOriginalWidth = oConfig.getProperty("width");
              
              if (!sOriginalWidth || sOriginalWidth == "auto") {
      
                  sNewWidth = (this.element.offsetWidth + "px");
      
                  oConfig.setProperty("width", sNewWidth);
  
                  this.subscribe("hide", restoreOriginalWidth, 
                      [(sOriginalWidth || ""), sNewWidth]);
              
              }
          }
      }
docs: /*
  "beforeShow" event handler that sets a Panel instance's "width"
  configuration property to the value of its root HTML
  elements's offsetWidth