Make placeholders disappear on focus, instead of when you start typing. (jQuery)

placeholderPoof.js

;(function($){
	$(document).ready(function(){
		
		var x = $('[placeholder]');
						
		for( var i=0, len=x.length; i<len; i++ ){
			x.eq(i).attr('data-placeholder', x.eq(i).attr('placeholder'));
		}
		
		x.on('focus', function(){ $(this).attr('placeholder', ''); })
		x.on('blur', function(){ $(this).attr('placeholder', $(this).data('placeholder')); });
	});
})(jQuery);