Replaces input field placeholders with text until focused

placeholder.js

$('[placeholder]').focus(function() {
	    var input = $(this);
	    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]').parents('form').submit(function() {
	    $(this).find('[placeholder]').each(function() {
	        var input = $(this);
	        if (input.val() == input.attr('placeholder')) {
	            input.val('');
	        }
	    })
	});