blatyo

InputOnChange = Class.create({
  initialize: function(elementToWatch, functionToExecute, delay){
     this.id = null;
     this.functionToExecute = functionToExecute;
     this.delay = delay;
     elementToWatch.observe('keyup', this.onKeyUp.bindAsEventListener(this));
  },
  onKeyUp: function(event){
    if(this.id){
      window.clearTimeout(this.id);

blatyo

Element.addMethods({
    isVisible: function(element){
        return !$(element).getStyle('visibility').match('hidden');
    },
    
    makeVisible: function(element){
        //IE doesn't work with others, so we don't handle them
        return $(element).setStyle({visibility: 'visible'});
    },
    

blatyo

Element.addMethods({
    observeAll: function(element, eventHandlers){
        $H(eventHandlers).each(function(handler){
            Event.observe(element, handler.key, handler.value);
        });
    },
    stopObservingAll: function(element, eventHandlers){
        $H(eventHandlers).each(function(handler){
            Event.stopObserving(element, handler.key, handler.value);
        });