// browser version detect: in caso di IE6 disabilito alcune funzionalita'
var msie6 = false;	
$.each($.browser, function(i, val) {							   
  if($.browser.msie){
    if($.browser.version == '6.0'){
    msie6 = true;
    
    }	
  }     	
});		

	
$(document).ready(function() {
  // H E A D E R  F A D E
  var HeaderScrolled = false;
  var searchVisible = false;

  function FadeHeaderOut() {
      $("#top_bar").stop().fadeTo("slow", 0.50);
      HeaderScrolled = true;
  }

  function FadeHeaderIn() {
      $("#top_bar").stop().fadeTo("fast", 1);
      HeaderScrolled = false;
  }

  if (!msie6) {
     $(window).unbind("scroll").bind("scroll", function() {
    if (!HeaderScrolled) FadeHeaderOut();
    var scrollTop = $(document).scrollTop();
    if (scrollTop == 0) FadeHeaderIn();
      //if (searchVisible) toggleSearch();
      });

       $("#top_bar").bind("mouseenter", function() {
          FadeHeaderIn();
      });

      $("#top_bar").bind("mouseleave", function() {
          var scrollTop = $(document).scrollTop();
          if (scrollTop != 0) FadeHeaderOut();
      });
  }
  
  // javascript hover, instead of css, in order to avoid a IE8 css bug
  $("#top_bar").hover(
    function(){
      $(this).addClass("hover");	
    },
    function(){
      $(this).removeClass("hover");	
    }
  );
});