public/javascripts/yui/container/container.js
function(el) {
            var height = el.offsetHeight;

            if (el.getBoundingClientRect) {
                var rect = el.getBoundingClientRect();
                height = rect.bottom - rect.top;
            }

            return height;
        }
function(el) {
            var height = el.offsetHeight;

            if (el.getBoundingClientRect) {
                var rect = el.getBoundingClientRect();
                height = rect.bottom - rect.top;
            }

            return height;
        }
function ( el ) { var height = el . offsetHeight ; if ( el . getBoundingClientRect ) { var rect = el . getBoundingClientRect ( ) ; height = rect . bottom - rect . top ; } return height ; }
Returns the sub-pixel height of the el, using getBoundingClientRect, if available,
otherwise returns the offsetHeight
@method _getPreciseHeight
@private
@param {HTMLElement} el
@return {Float} The sub-pixel height if supported by the browser, else the rounded height.
Returns the sub - pixel height of the el using getBoundingClientRect if available otherwise returns the offsetHeight