$(document).ready(function() {
// search box value and img change 
var searchBox = $("#search-field"); 
var searchBoxDefault = searchBox.val();
var txtField = $(".txt-field"); 
var txtFieldDefault1 = "inserisci il nome";
var txtFieldDefault2 = "inserisci il nickname";  

	searchBox.focus( function () {
	  if( $(this).attr("value") == searchBoxDefault ) $(this).attr("value", "");
	  $("#search-bl").css("background-position", "0 -49px");
	
	});
	searchBox.blur( function () {
  		if( $(this).attr("value") == "") $(this).attr("value", searchBoxDefault);
		$("#search-bl").css("background-position", "0 45px");
	});
	
	txtField.focus( function () {
 		if( $(this).attr("value") == txtFieldDefault1, txtFieldDefault2 )  $(this).attr("value", ""); 
	}); 

	txtField.blur( function () {
		if( $(this).attr("value") == "") { $(this).attr("value", txtFieldDefault1); }
		else {  $(this).attr("value", txtFieldDefault2); }
				
	});
	

});