window.addEvent('domready', function() {
	var search = $('nav_search');
	if (search) {
		search.addEvents({
			'focus': function() {
				if (search.value == 'search') {
					search.value = '';
				}
			},
			'blur': function() {	
				if (search.value == '') {
					search.value = 'search';
				}
			}
		});
	}
});