$(document).ready(function(){
  $("#navigationli1").corner("round 12px");
  $("#navigationli2").corner("round 12px");
  $("#navigationli3").corner("round 12px");
  $("#navigationli4").corner("round 12px");
  $("#contentimage").corner("round 20px");
  $("#contentimagesmall").corner("round 12px");
  $(".btn").corner("round 8px");
});