$(document).ready(function(){
  $(".shd").fadeTo(0,0);
  $("#body a").hide();
  
  $("#body .site1").bind("mouseenter",function(){
    $("#body .site1 .shd").fadeTo(500,0.5);
    $("#body .site1 a").show();
  }).bind("mouseleave",function(){
    $("#body .site1 a").hide();
    $("#body .site1 .shd").fadeTo(300,0);
  });
  
  $("#body .site2").bind("mouseenter",function(){
    $("#body .site2 .shd").fadeTo(500,0.5);
    $("#body .site2 a").show();
  }).bind("mouseleave",function(){
    $("#body .site2 a").hide();
    $("#body .site2 .shd").fadeTo(300,0);
  });
  
  $("#body .site3").bind("mouseenter",function(){
    $("#body .site3 .shd").fadeTo(500,0.5);
    $("#body .site3 a").show();
  }).bind("mouseleave",function(){
    $("#body .site3 a").hide();
    $("#body .site3 .shd").fadeTo(300,0);
  });
});