Add placeholder attribute fallback for older browsers

placeholders.js

placeholderSupport = ("placeholder" in document.createElement("input"));
 
if (placeholderSupport === false) {
    $('[placeholder]').each(function () {
        var $input = $(this),
            placeholder = $input.attr('placeholder');

        $input
            .val(placeholder)
            .focus(function () {
                if ($input.val() === placeholder) {
                    $input.val('');
                }
            })
            .blur(function () {
                if ($input.val() === '') {
                    $input.val(placeholder);
                }
            });
    });
}