/*	IMAGE GALLERY JAVASCRIPT FILE

	The first two Vars are for the slider - the variables are pretty self explanatory
	The updateGallery function runs the AJAX - url provides the new content and updateDiv is the target DIV
	The showHide function applies 'display' to the 'div's display attribute
	startSlideshow and stopSlideshow are don't need explaining...
	
	After that comes the slider script - see below for additional info in comments
	*/
var speedOptions = 10; /* Used on Slider: One to -speedOptions- seconds per slide */
var operate = {
	'b_vertical' : false,
	'b_watch': false,
	'n_controlWidth': 144,
	'n_controlHeight': 17,
	'n_sliderWidth': 20,
	'n_sliderHeight': 40,
	'n_pathLeft' : -4,
	'n_pathTop' : -23,
	'n_pathLength' : 135,
	/*'s_imgControl': 'images/sliderScale.png',*/
	's_imgSlider': 'images/arrow.png',
	'n_zIndex': 1
}
var initialize = {
	's_form' : 'sliderForm',
	's_name': 'rotSpeed',
	'n_minValue' : 1,
	'n_maxValue' : speedOptions,
	'n_value' : 5,
	'n_step' : 1
}
var t;
var speedAdjust = speedOptions + 1;
		
function updateGallery(url, updateDiv)
{
showHide('galleryPopup', 'none');
	var xmlHttp;
	try
	{
		// Normal Browsers (non-IE)
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				//Some weird browser or something so we'll give an error for now to debug with
				alert("Unable to Load Image - Please try with a different Browser");
				return false;
			}
		}
	}

	xmlHttp.onreadystatechange=function()
	{
	if(xmlHttp.readyState==4)
		{
			/*alert("THE FOLLOWING CODE WILL BE INSTERTED INTO: " + updateDiv + " ["+ xmlHttp.responseText + "]");*/
			document.getElementById(updateDiv).innerHTML=xmlHttp.responseText;
			if(updateDiv == 'galleryNavigation')
			{
				updateGallery('updateGallery.cfm?action=thumbs', 'gallerySelector');
			}
		}
	}
	url = url + "&rand=" + Math.random();
	/*alert ("THIS IS BEING SENT TO THE SERVER: [" + url + "]");*/
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}
  
function showHide(div, display) 
{
	document.getElementById(div).style.display = display;
}

function stopSlideshow(option)
{
	clearInterval(t);
	if(option != 'pause')
	{
		showHide('galleryPopup', 'block');
	}
	showHide('galleryStop','none');
	showHide('galleryStart','block');
}

function startSlideshow(startingImage, total)
{
	showHide('galleryPopup', 'none');
	showHide('galleryStart', 'none');
	showHide('galleryStop','block');
	startingImage++;
	if(startingImage <= total)
		updateGallery('updateGallery.cfm?pic=' + startingImage, 'galleryImage');
	speed = document.getElementById('rotSpeed').value;
	speed = speedAdjust - speed;
	interval = speed * 1000; /* ms to second conversion */
	t = setInterval(function () {
		if(startingImage >= total)
		{
			stopSlideshow();
		}
		else
		{
			updateGallery('updateGallery.cfm?pic=next', 'galleryImage');
			updateGallery('updateGallery.cfm?action=preload', 'galleryPreloader');
			startingImage++;
		}
	}, interval);
}


function updateSSButton(currentImage, total)
{
	document.getElementById('galleryStart').onclick=Function('startSlideshow("'+currentImage+'","'+total+'"); showHide("widget", "none");');
}


// Title: tigra slider control
// Description: See the demo at url
// URL: http://www.softcomplex.com/products/tigra_slider_control/
// Version: 1.0 (commented source)
// Date: 02/15/2006
// Tech. Support: http://www.softcomplex.com/forum/
// Notes: This script is free. Visit official site for further details.

function slider (a_init, a_tpl) {

	this.f_setValue  = f_sliderSetValue;
	this.f_getPos    = f_sliderGetPos;
	
	// register in the global collection	
	if (!window.A_SLIDERS)
		window.A_SLIDERS = [];
	this.n_id = window.A_SLIDERS.length;
	window.A_SLIDERS[this.n_id] = this;

	// save config parameters in the slider object
	var s_key;
	if (a_tpl)
		for (s_key in a_tpl)
			this[s_key] = a_tpl[s_key];
	for (s_key in a_init)
		this[s_key] = a_init[s_key];

	this.n_pix2value = this.n_pathLength / (this.n_maxValue - this.n_minValue);
	if (this.n_value == null)
		this.n_value = this.n_minValue;

	// generate the control's HTML
	document.write(
		'<div style="width:' + this.n_controlWidth + 'px;height:' + this.n_controlHeight + 'px;border:0; background-image:url(' + this.s_imgControl + ')" id="sl' + this.n_id + 'base">' +
		'<img src="' + this.s_imgSlider + '" width="' + this.n_sliderWidth + '" height="' + this.n_sliderHeight + '" border="0" style="position:relative;left:' + this.n_pathLeft + 'px;top:' + this.n_pathTop + 'px;z-index:' + this.n_zIndex + ';cursor:hand;visibility:hidden;" name="sl' + this.n_id + 'slider" id="sl' + this.n_id + 'slider" onmousedown="stopSlideshow(\'pause\'); return f_sliderMouseDown(' + this.n_id + ')"/></div>'
	);
	this.e_base   = get_element('sl' + this.n_id + 'base');
	this.e_slider = get_element('sl' + this.n_id + 'slider');
	
	// safely hook document/window events
	if (document.onmousemove != f_sliderMouseMove) {
		window.f_savedMouseMove = document.onmousemove;
		document.onmousemove = f_sliderMouseMove;
	}
	if (document.onmouseup != f_sliderMouseUp) {
		window.f_savedMouseUp = document.onmouseup;
		document.onmouseup = f_sliderMouseUp;
	}
	// preset to the value in the input box if available
	var e_input = this.s_form == null
		? get_element(this.s_name)
		: document.forms[this.s_form]
			? document.forms[this.s_form].elements[this.s_name]
			: null;
	this.f_setValue(e_input && e_input.value != '' ? e_input.value : null, 1);
	this.e_slider.style.visibility = 'visible';
}

function f_sliderSetValue (n_value, b_noInputCheck) {
	if (n_value == null)
		n_value = this.n_value == null ? this.n_minValue : this.n_value;
	if (isNaN(n_value))
		return false;
	// round to closest multiple if step is specified
	if (this.n_step)
		n_value = Math.round((n_value - this.n_minValue) / this.n_step) * this.n_step + this.n_minValue;
	// smooth out the result
	if (n_value % 1)
		n_value = Math.round(n_value * 1e5) / 1e5;

	if (n_value < this.n_minValue)
		n_value = this.n_minValue;
	if (n_value > this.n_maxValue)
		n_value = this.n_maxValue;

	this.n_value = n_value;

	// move the slider
	if (this.b_vertical)
		this.e_slider.style.top  = (this.n_pathTop + this.n_pathLength - Math.round((n_value - this.n_minValue) * this.n_pix2value)) + 'px';
	else
		this.e_slider.style.left = (this.n_pathLeft + Math.round((n_value - this.n_minValue) * this.n_pix2value)) + 'px';

	// save new value
	var e_input;
	if (this.s_form == null) {
		e_input = get_element(this.s_name);
		if (!e_input)
			return b_noInputCheck ? null : f_sliderError(this.n_id, "Can not find the input with ID='" + this.s_name + "'.");
	}
	else {
		var e_form = document.forms[this.s_form];
		if (!e_form)
			return b_noInputCheck ? null : f_sliderError(this.n_id, "Can not find the form with NAME='" + this.s_form + "'.");
		e_input = e_form.elements[this.s_name];
		if (!e_input)
			return b_noInputCheck ? null : f_sliderError(this.n_id, "Can not find the input with NAME='" + this.s_name + "'.");
	}
	e_input.value = n_value;
}

// get absolute position of the element in the document
function f_sliderGetPos (b_vertical, b_base) {
	var n_pos = 0,
		s_coord = (b_vertical ? 'Top' : 'Left');
	var o_elem = o_elem2 = b_base ? this.e_base : this.e_slider;
	
	while (o_elem) {
		n_pos += o_elem["offset" + s_coord];
		o_elem = o_elem.offsetParent;
	}
	o_elem = o_elem2;

	var n_offset;
	while (o_elem.tagName != "BODY") {
		n_offset = o_elem["scroll" + s_coord];
		if (n_offset)
			n_pos -= o_elem["scroll" + s_coord];
		o_elem = o_elem.parentNode;
	}
	return n_pos;
}

function f_sliderMouseDown (n_id) {
	window.n_activeSliderId = n_id;
	return false;
}

function f_sliderMouseUp (e_event, b_watching) {
	if (window.n_activeSliderId != null) {
		var o_slider = window.A_SLIDERS[window.n_activeSliderId];
		o_slider.f_setValue(o_slider.n_minValue + (o_slider.b_vertical
			? (o_slider.n_pathLength - parseInt(o_slider.e_slider.style.top) + o_slider.n_pathTop)
			: (parseInt(o_slider.e_slider.style.left) - o_slider.n_pathLeft)) / o_slider.n_pix2value);
		if (b_watching)	return;
		window.n_activeSliderId = null;
	}
	if (window.f_savedMouseUp)
		return window.f_savedMouseUp(e_event);
}

function f_sliderMouseMove (e_event) {

	if (!e_event && window.event) e_event = window.event;

	// save mouse coordinates
	if (e_event) {
		window.n_mouseX = e_event.clientX + f_scrollLeft();
		window.n_mouseY = e_event.clientY + f_scrollTop();
	}

	// check if in drag mode
	if (window.n_activeSliderId != null) {
		var o_slider = window.A_SLIDERS[window.n_activeSliderId];

		var n_pxOffset;
		if (o_slider.b_vertical) {
			var n_sliderTop = window.n_mouseY - o_slider.n_sliderHeight / 2 - o_slider.f_getPos(1, 1) - 3;
			// limit the slider movement
			if (n_sliderTop < o_slider.n_pathTop)
				n_sliderTop = o_slider.n_pathTop;
			var n_pxMax = o_slider.n_pathTop + o_slider.n_pathLength;
			if (n_sliderTop > n_pxMax)
				n_sliderTop = n_pxMax;
			o_slider.e_slider.style.top = n_sliderTop + 'px';
			n_pxOffset = o_slider.n_pathLength - n_sliderTop + o_slider.n_pathTop;
		}
		else {
			var n_sliderLeft = window.n_mouseX - o_slider.n_sliderWidth / 2 - o_slider.f_getPos(0, 1) - 3;
			// limit the slider movement
			if (n_sliderLeft < o_slider.n_pathLeft)
				n_sliderLeft = o_slider.n_pathLeft;
			var n_pxMax = o_slider.n_pathLeft + o_slider.n_pathLength;
			if (n_sliderLeft > n_pxMax)
				n_sliderLeft = n_pxMax;
			o_slider.e_slider.style.left = n_sliderLeft + 'px';
			n_pxOffset = n_sliderLeft - o_slider.n_pathLeft;
		}
		if (o_slider.b_watch)
			 f_sliderMouseUp(e_event, 1);

		return false;
	}
	
	if (window.f_savedMouseMove)
		return window.f_savedMouseMove(e_event);
}

// get the scroller positions of the page
function f_scrollLeft() {
	return f_filterResults (
		window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}
function f_scrollTop() {
	return f_filterResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}
function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}

function f_sliderError (n_id, s_message) {
	alert("Slider #" + n_id + " Error:\n" + s_message);
	window.n_activeSliderId = null;
}

get_element = document.all ?
	function (s_id) { return document.all[s_id] } :
	function (s_id) { return document.getElementById(s_id) };