rem: left_delta = event.pageX - ( event.target.parentNode.offsetWidth - 2 ); 
add: top_delta = event.pageY - event.target.parentNode.offsetTop; bottom_delta = event.target.parentNode.offsetTop + event.target.parentNode.offsetHeight - 2; 
context:   set['window-scale-right'] = function(event)  {    left_delta = event.pageX - ( event.target.parentNode.offsetWidth - 2 );  }
meta: 7593	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7593/b6b285deb859c02df5f4422053e63b11338b0112/html_windows.js/clean/src/scripts/html_windows.js