Hash.prototype.without=function(){var values=$A(arguments);var retHash=$H();this.each(function(entry){if(!values.include(entry.key))
retHash.set(entry.key,entry.value);});return retHash;}
Element.insertAfter=function(insert,element){if(element.nextSibling)element.parentNode.insertBefore(insert,element.nextSibling);else element.parentNode.appendChild(insert);}
Element._remove=Element.remove;Element.remove=function(element){element=$(element);if(element.parentNode)
return Element._remove(element);}