rem: if(Sortable._marker) Element.hide(Sortable._marker); 
add: if(Sortable._marker) Sortable._marker.hide(); 
context:   unmark: function() {    if(Sortable._marker) Element.hide(Sortable._marker);  },
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/dragdrop.js/clean/www/resources/scriptaculous/dragdrop.js