organizer.rescale = function(selector, property, percent) {
    var oldValue = parseFloat(selector.css(property));
    selector.css(property, oldValue*percent);
  };
  
  organizer.rescaleRelative = function(selector, property, relative, percent) {
    var oldValue = parseFloat(selector.css(property)) - relative;
    selector.css(property, oldValue*percent + relative);      
  };