/*
 *  $Id: search.form.js 10 2010-04-15 20:13:33Z stuart $
 *  
 *  stuconnolly.com   
 *
 *  Copyright (c) 2010 Stuart Connolly. All rights reserved.
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

var DEFAULT_VAL = 'Search';
var isSafari    = (navigator.userAgent.indexOf("AppleWebKit") != -1);

run();

function run() 
{
	var oldOnload = window.onload;

	if (typeof(window.onload) != "function") {
		window.onload = init;
	} 
	else {
		window.onload = function() {
			oldOnload();
			init();
		}
	}
}

function init() 
{
	if (!document.getElementById) return;

	var theSearchField = document.getElementById('s');

	if (isSafari) {
		theSearchField.setAttribute('type', 'search');
		theSearchField.setAttribute('autosave', 'saved.data');
		theSearchField.setAttribute('results', '5');
		theSearchField.setAttribute('placeholder', DEFAULT_VAL);
	} 
	else {
		theSearchField.onfocus = focusSearch;
		theSearchField.onblur  = blurSearch;

		if (theSearchField.value == '') {
			theSearchField.value = DEFAULT_VAL;
		}
	}
}

function focusSearch()
{
	if (this.value == DEFAULT_VAL) {
		this.value = '';
	}
}

function blurSearch() 
{
	if (this.value == '') {
		this.value = DEFAULT_VAL;
	}
}