rem: element = element.parentNode; 
add: element = element.offsetParent; 
context:     _getCumulativeOffset: function(element) {        var valueT = 0, valueL = 0;        do {            valueT += element.offsetTop  || 0;            valueL += element.offsetLeft || 0;            element = element.parentNode;        } while (element);        return { left: valueL, top: valueT };    },
meta: 600	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/600/7e7b6d620ac57fe0aee43f5a108d05d8f0305349/WebCore.js/clean/src/webcontainer/java/nextapp/echo/webcontainer/resource/js/WebCore.js