$(document).ready(function(){
  $("#header_menu div.button img").click(function(){
    if($(this).attr("alt") == "Minimize"){
      $("#header_menu").animate({width:'50px'});
      $("#header_menu div.button img").attr("src","/images/icons/back.png").attr("alt","Restore");
      $("#header_menu div.content").hide();
    }
    else{
      $("#header_menu").animate({width:'325px'});
      $("#header_menu div.button img").attr("src","/images/icons/forward.png").attr("alt","Minimize");
      $("#header_menu div.content").show();
    }
  });
});