HTML input field placeholder handling

placeholder.js

/* Hide/show placeholder text in an input field while it's empty
 * To use, add data-placheholder="placeholder text" to your fields
 * Eg: <input type="text" id="email" value="" data-placeholder="Enter your e-mail">
 */
$('input[data-placeholder]').each(function(){
    $(this)
        .bind('focus', function() {
            if ($(this).val() == $(this).data('placeholder'))
                $(this).val('');
        })
        .bind('blur', function() {
            if (!$(this).val())
                $(this).val($(this).data('placeholder'));
        })
        .trigger('blur');
});