Class.Binds=new Class({$bound:{},bound:function(name){return this.$bound[name]?this.$bound[name]:this.$bound[name]=this[name].bind(this);}});Class.Instantiate=function(klass,options){var create=function(object){new klass(object,options);};return function(objects){objects.each(create);};};(function(){var storage={storage:{},store:function(key,value){this.storage[key]=value;},retrieve:function(key){return this.storage[key]||null;}};Class.Singleton=function(){this.$className=String.uniqueID();};Class.Singleton.prototype.check=function(item){if(!item)item=storage;var instance=item.retrieve('single:'+this.$className);if(!instance)item.store('single:'+this.$className,this);return instance;};var gIO=function(klass){var name=klass.prototype.$className;return name?this.retrieve('single:'+name):null;};if(('Element'in this)&&Element.implement)Element.implement({getInstanceOf:gIO});Class.getInstanceOf=gIO.bind(storage);}).call(this);(function(){if(!this.Form)this.Form={};var supportsPlaceholder=('placeholder'in document.createElement('input'));if(!('supportsPlaceholder'in this)&&this.supportsPlaceholder!==false&&supportsPlaceholder)return;var wrapSet=function(set,self){return function(key,value){if(key=='value'&&!value){self.reset();return this;}
return set.apply(this,arguments);};};var wrapGet=function(get,self){return function(key){if(key=='value'&&!self.hasValue())
return'';return get.apply(this,arguments);};};this.Form.Placeholder=new Class({Implements:[Class.Singleton,Class.Binds,Options],options:{color:'#777'},initialize:function(element,options){this.setOptions(options);element=this.element=document.id(element);return this.check(element)||this.setup();},setup:function(){var element=this.element;this.defaultValue=element.get('placeholder')||element.value;this.color=element.getStyle('color');element.erase('placeholder');element.set=wrapSet(element.set,this);element.get=wrapGet(element.get,this);this.attach();if(!this.hasValue())this.reset();},attach:function(){this.element.addEvents({focus:this.bound('focus'),blur:this.bound('blur')});return this;},detach:function(){this.element.removeEvents({focus:this.bound('focus'),blur:this.bound('blur')});return this;},clear:function(){var element=this.element;element.setStyle('color',this.color);if(element.value==this.defaultValue)element.value='';return this;},reset:function(){this.element.setStyle('color',this.options.color).value=this.defaultValue;return this;},focus:function(){this.clear();},blur:function(){if(!this.element.value)this.reset();},hasValue:function(){var value=this.element.value;return(value&&value!=this.defaultValue);}});}).call(this);