return Selector.findElement($(element).previousSiblings(), expression, index); 
element = $(element); if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element)); var previousSiblings = element.previousSiblings(); return expression ? Selector.findElement(previousSiblings, expression, index) : previousSiblings[index || 0]; 
  previous: function(element, expression, index) {    return Selector.findElement($(element).previousSiblings(), expression, index);  },
4053	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4053/37a06e5ed1bdb861348bb0cfd02f71470a0dfdfb/prototype.js/clean/lib/prototype.js