position

function getposition(objID) {
 var obj=document.getElementById(objID);
 var r = new Array();
 r['x'] = obj.offsetLeft;
 r['y'] = obj.offsetTop;
 while(obj = obj.offsetParent) {
 r['x'] += obj.offsetLeft;
 r['y'] += obj.offsetTop;
 }
 return r;
}