rem: Sortable._marker.style.left = offsets[0] + 'px'; Sortable._marker.style.top = offsets[1] + 'px'; 
add: Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); 
context:   mark: function(dropon, position) {    // mark on ghosting only    var sortable = Sortable.options(dropon.parentNode);    if(sortable && !sortable.ghosting) return;     if(!Sortable._marker) {      Sortable._marker = $('dropmarker') || document.createElement('DIV');      Element.hide(Sortable._marker);      Element.addClassName(Sortable._marker, 'dropmarker');      Sortable._marker.style.position = 'absolute';      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);    }        var offsets = Position.cumulativeOffset(dropon);    Sortable._marker.style.left = offsets[0] + 'px';    Sortable._marker.style.top = offsets[1] + 'px';        if(position=='after')      if(sortable.overlap == 'horizontal')         Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';      else        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';        Element.show(Sortable._marker);  },
meta: 6359	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6359/52d313976f72b3f30c833a7675d476a595bc284d/dragdrop.js/buggy/web/js/dragdrop.js