public/javascripts/yui/container/container.js
function () {
            var oUnderlay = this.underlay,
                oElement;

            if (oUnderlay) {
                oElement = this.element;
                oUnderlay.style.width = oElement.offsetWidth + "px";
                oUnderlay.style.height = oElement.offsetHeight + "px";
            }
        }
function () {
            var oUnderlay = this.underlay,
                oElement;

            if (oUnderlay) {
                oElement = this.element;
                oUnderlay.style.width = oElement.offsetWidth + "px";
                oUnderlay.style.height = oElement.offsetHeight + "px";
            }
        }
function ( ) { var oUnderlay = this . underlay , oElement ; if ( oUnderlay ) { oElement = this . element ; oUnderlay . style . width = oElement . offsetWidth + "px" ; oUnderlay . style . height = oElement . offsetHeight + "px" ; } }
Adjusts the size of the shadow based on the size of the element.
@method sizeUnderlay
Adjusts the size of the shadow based on the size of the element .