window.addEvent('domready', function(){
	Element.implement({
		clearInput: function(attr){
			var valueString = this.get(attr);
			this.addEvents({
				'focus': function(){
					if (this.get('value') == valueString)
						this.set('value', '');
				},
				'blur': function(){
					if (this.get('value') == "")
						this.set('value', valueString);
				}
			});
		}
	});
	$$('.clrinput').clearInput('alt');
});