emulate placeholders in IE9 and other dumb browsers

placeholders.js

  // test to see if the browser supports native html5 placeholders
  jQuery.support.placeholder = (function(){
    var i = document.createElement('input');
    return 'placeholder' in i;
  })();

  // if the browser doesn't support placeholders (IE9!!!!!!), do them manually
  if (!$.support.placeholder) {
    $("input").each(function(){
      var current = $(this);
      if (current.val() === "" && current.attr("placeholder") !== "") {
        current.val(current.attr("placeholder"));
        current.focus(function() {
          if(current.val() === $(this).attr("placeholder")) {
            $(this).val("");
          }
        });
        $(this).blur(function() {
          if($(this).val() === "") {
            $(this).val($(this).attr("placeholder"));
          }
        });
      }
    });
  }

/*
 * via 
 * http://stackoverflow.com/questions/8263891/simple-way-to-check-if-placeholder-is-supported
 * http://kamikazemusic.com/quick-tips/jquery-html5-placeholder-fix/
 */