jQuery HTML5 placeholder fix.js

$.fn.html5_placeholder = function() {
    var input = $(this);
    input.focus(function() {
        if (input.val() == input.attr('placeholder')) {
            input.val('');
            input.removeClass('placeholder');
        }
    }).blur(function() {
      var input = $(this);
        if (input.val() == '' || input.val() == input.attr('placeholder')) {
            input.addClass('placeholder');
            input.val(input.attr('placeholder'));
        }
    }).blur();
}

.placeholder {
    color: #aaa;
}