IE Placeholder support

placeholder.js

if(!$.support.placeholder) { 
	var active = document.activeElement;
	$('[type="text"], [type="email"], textarea').focus(function () {
		if ($(this).attr('placeholder') != '' && $(this).val() == $(this).attr('placeholder')) {
			$(this).val('').removeClass('hasPlaceholder');
		}
	}).blur(function () {
		if ($(this).attr('placeholder') != '' && ($(this).val() == '' || $(this).val() == $(this).attr('placeholder'))) {
			$(this).val($(this).attr('placeholder')).addClass('hasPlaceholder');
		}
	});
	$('[type="text"], [type="email"], textarea').blur();
	$(active).focus();
	$('form').submit(function () {
		$(this).find('.hasPlaceholder').each(function() {
			if ( $(this).val() == $(this).attr('placeholder') ) {
				$(this).val('');
			}
		});
	});
}