Method to get the left and upper offsets of an element

function getElementLeft(element) { var actualLeft = element.offsetLeft; var current = element.offsetParent; while (current!==null) { actualLeft += current.offsetLeft; current = current.offsetParent; } return actualLeft; }

Get the left offset of the element;

 function getElementTop(element) { var actualTop = element.offsetTop; var current = element.offsetParent; while (current!==null) { <span style="white-space:pre"> </span>actualTop += current.offsetTop; current = current.offsetParent; } return actualTop; }

Get the upper offset of the element;

Use the offsetParent property to trace back upwards step by step in the Dom level to sum up the offsets of each level.