$(document).ready(function(){
   $("#facebookpanel, #facebookcontent").hide(); //hides the panel and content from the user
   $('#facebookbtn').toggle(function(){ //adding a toggle function to the #tab
      $('#facebookpanel').stop().animate({width:"510px", opacity:1}, 500, function() {//sliding the #panel to 400px
	  $('#facebookcontent').fadeIn('slow'); //slides the content into view.
	  });  
   },
   function(){ //when the #tab is next cliked
   $('#facebookcontent').fadeOut('slow', function() { //fade out the content 
      $('#facebookpanel').stop().animate({width:"0", opacity:1}, 500); //slide the #panel back to a width of 0
	  });
   });

});