$(document).ready(function(){

   $(".fade").fadeTo("slow", 1.0); // This sets the opacity of the thumbs to fade down to 100% when the page loads

   $(".fade").hover(function(){

   $(this).fadeTo("slow", 0.70); // This should set the opacity to 70% on hover

   },function(){

   $(this).fadeTo("slow", 1.0); // This should set the opacity back to 100% on mouseout

   });

});