function hapoel4xp() {
	/*
	 * http://simonwillison.net/2004/May/26/addLoadEvent/
	 * The addLoadEvent function takes as an argument another function which should be executed
	 *  once the page has loaded. Unlike assigning directly to window.onload, the function adds
	 *  the event in such a way that any previously added onload functions will be executed first.
	 * */
	this.initWindow = function() {
		try {
			var oldonload = window.onload;
			//alert('b'+oldonload.toString());
			if (typeof window.onload != 'function') {
				window.onload = function() {
					hapoel4xp.initHapoel4xp();
				}
			} else {
				window.onload = function() {
					if (oldonload) {
						oldonload();
					}
					hapoel4xp.initHapoel4xp();
				}
			}
		} catch(err) {
			this.errorAlert(err,"initWindow");
		}
	}
	this.initHapoel4xp = function() {
		// include jquery librariess
//  		jQuery.noConflict();
		this.tt_news_latestSwitch_init();
	}
	/*
	 * hide all, show first
	 * */
	this.tt_news_latestSwitch_init = function() {
		$(".tt_news_latest_item_active").css("display","none");
		$(".tt_news_latest_item_active:first").css("display","block");
	}
	this.tt_news_latestSwitch = function(el) {
		$(".tt_news_latest_item_active").css("display","none");
		$(el).find(".tt_news_latest_item_active").css("display","block");
	}
	this.errorAlert = function(err,origin) {
	alert("ERROR: "+origin+err);
	}
}


hapoel4xp = new hapoel4xp();
hapoel4xp.initWindow();



var big_img_array = new Array ();
	big_img_array[0] = "/fileadmin/template/images/video_img.jpg";
	big_img_array[1] = "/fileadmin/template/images/video_img.jpg";
	big_img_array[2] = "/fileadmin/template/images/video_img.jpg";
	big_img_array[3] = "/fileadmin/template/images/video_img.jpg";
	
var last_id="";

function change_images_loop ()
{
	var id_array = new Array ();
		id_array[0] = "img1";
		id_array[1] = "img2";
		id_array[2] = "img3";
		id_array[3] = "img4";
	
	var index = 0;
	while (true)
	{
		if (index == 0)
		{
			change_to_black_bg (id_array[index]);
		}
		else
		{
			change_to_grey_bg (id_array[index-1]);
			change_to_black_bg (id_array[index]);
		}
	}
}

function change_image_and_bg (td_id, image_src)
{
	change_to_black_bg (td_id);
	remove_last_black_arrow ();
	add_black_arrow(td_id);
	if (last_id != "")
	{
		if (last_id != td_id)
			change_to_grey_bg (last_id);
	}
	document.getElementById("big_video").src=image_src;
	last_id = td_id;
}

function change_to_grey_bg (td_id)
{
	document.getElementById(td_id).style.background="url(/fileadmin/template/images/video_grey_bg.jpg)";
}

function change_to_black_bg (td_id)
{
	document.getElementById(td_id).style.background="url(/fileadmin/template/images/video_black_bg.jpg)";
	document.getElementById(td_id).style.height = "69px";
}

function add_black_arrow (td_id)
{
	switch (td_id)
	{
		case 'img1':
		{
			document.getElementById("big_img").innerHTML = document.getElementById("big_img").innerHTML + "<img src='/fileadmin/template/images/left_black_arrow.png' style='position:absolute;right:240px;top:2px;z-index:2;' />";
			break;
		}
		case 'img2':
		{
			document.getElementById("big_img").innerHTML = document.getElementById("big_img").innerHTML + "<img src='/fileadmin/template/images/left_black_arrow.png' style='position:absolute;right:240px;top:73px;z-index:2;' />";
			break;
		}
		case 'img3':
		{
			document.getElementById("big_img").innerHTML = document.getElementById("big_img").innerHTML + "<img src='/fileadmin/template/images/left_black_arrow.png' style='position:absolute;right:240px;top:144px;z-index:2;' />";
			break;
		}
		case 'img4':
		{
			document.getElementById("big_img").innerHTML = document.getElementById("big_img").innerHTML + "<img src='/fileadmin/template/images/left_black_arrow.png' style='position:absolute;right:240px;top:215px;z-index:2;' />";
			break;
		}
	}
}
function remove_last_black_arrow ()
{
	if (last_id != "")
	{
		document.getElementById("big_img").innerHTML = "<img src='/fileadmin/template/images/video_img.jpg'  id='big_video' />";
	}
}

function checkform()
{
	if (document.getElementById("first_name").value == "")
	{
		document.getElementById("error_message").innerHTML = "אנא הכנס שם פרטי";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("first_name").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	
	if (document.getElementById("last_name").value == "")
	{
		document.getElementById("error_message").innerHTML = "אנא הכנס שם משפחה";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("last_name").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	
	if (document.getElementById("area_code").value == "")
	{
		document.getElementById("error_message").innerHTML = "אנא בחר קידומת";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("area_code").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	
	if ((document.getElementById("phone").value == "") || (document.getElementById("phone").value.length > 10) || (isNaN(document.getElementById("phone").value)))
	{
		document.getElementById("error_message").innerHTML = "אנא הכנס מספר טלפון תקין";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("phone").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	
	if (document.getElementById("email").value == "")
	{
		document.getElementById("error_message").innerHTML = "אנא הכנס כתובת דוא&quot;ל תקינה";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("email").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	
	if (document.getElementById("message").value == "")
	{
		document.getElementById("error_message").innerHTML = "אנא הכנס תוכן";
		document.getElementById("error_message").style.display = "block";
		document.getElementById("message").focus();
		return false;
	}
	else
	{
		document.getElementById('error_message').style.display="none";
	}
	return true;
}