var W3CDOM = (document.createElement && document.getElementsByTagName);

var mouseOvers = new Array();
var mouseOuts = new Array();

window.onload = init;

function init()
{
	if (!W3CDOM) return;

	var imgs = document.getElementsByTagName('img');
	var img_cnt = imgs.length;
	for (var i=0;i<imgs.length;i++)
	{
		if(imgs[i].id.indexOf('mouseover') != -1) {
		imgs[i].onmouseover = mouseGoesOver;
		imgs[i].onmouseout = mouseGoesOut;
		var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf('.'));
		mouseOuts[i] = new Image();
		mouseOuts[i].src = imgs[i].src;
		mouseOvers[i] = new Image();
		mouseOvers[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + "_over" + suffix;
		imgs[i].number = i;
		}
	}

	var imgs = document.getElementsByTagName('input');
	for (var i=0;i<imgs.length;i++)
	{
		if(imgs[i].id.indexOf('mouseover') != -1) {
		imgs[i].onmouseover = mouseGoesOver;
		imgs[i].onmouseout = mouseGoesOut;
		var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf('.'));
		mouseOuts[i + img_cnt] = new Image();
		mouseOuts[i + img_cnt].src = imgs[i].src;
		mouseOvers[i + img_cnt] = new Image();
		mouseOvers[i + img_cnt].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf('.')) + "_over" + suffix;
		imgs[i].number = i + img_cnt;
		}
	}

}

function mouseGoesOver()
{
	this.src = mouseOvers[this.number].src;
}

function mouseGoesOut()
{
	this.src = mouseOuts[this.number].src;
}

// keep track or news form

var news_open = 0;

function show_news_form() {

	if(news_open) {

		new Effect.Highlight('add_news_caption', {startcolor: '#E9853A'});
		return false;

	}

	if($('news_add_form')) {
		Effect.SlideDown('news_add_form', {duration:0.5});
		news_open = 1;
		return false;
	} else {
		document.location="/add_news";
	}


	return false;
}

function hide_news_form() {

	Effect.SlideUp('news_add_form', {duration:0.5});

	news_open = 0;

}

// keep track or job form

var job_open = 0;

function show_job_form() {

	if(job_open) {

		Effect.Pulsate('job_add_form');
		return false;

	}

	if($('job_add_form')) {
		Effect.SlideDown('job_add_form', {duration:0.5});
		job_open = 1;
		return false;
	} else {
		document.location="/jobs/add_job";
	}

	return false;

}

function hide_job_form() {

	Effect.SlideUp('job_add_form', {duration:0.5});

	job_open = 0;

}

function isValidEmail(p_strEmail) {
	var regexp = /^\S+\@[a-zA-Z0-9\.-]+\.[a-zA-Z0-9]{2,4}$/;
	return regexp.test(p_strEmail);
}

function validateContact(frm) {
	if (frm.my_name.value == '') { alert('Please enter your name.'); frm.my_name.focus(); return false; }
	if (!isValidEmail(frm.email.value)) { alert('Please enter a valid e-mail address.'); frm.email.focus(); return false; }
	if (frm.subject.value == '') { alert('Please enter your subject.'); frm.subject.focus(); return false; }
	if (frm.message.value == '') { alert('Please enter your message.'); frm.message.focus(); return false; }
	return true;
}

function validateVolunteer(frm) {
	if (frm.my_name.value == '') { alert('Please enter your name.'); frm.my_name.focus(); return false; }
	if (!isValidEmail(frm.email.value)) { alert('Please enter a valid e-mail address.'); frm.email.focus(); return false; }
	//if (frm.message.value == '') { alert('Please enter your message.'); frm.message.focus(); return false; }
	return true;
}