/************************************************************************************************************
(C) www.dhtmlgoodies.com, June 2006

This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.

Thank you!

www.dhtmlgoodies.com
Alf Magne Kalleland

************************************************************************************************************/

var slideSpeed = 1; // Speed of thumbnail slide - Lower = faster
var slideSteps = 10; // Also speed of thumbnail slide - Higher = faster
// Hardcoded number of thumbnail columns, use false if you want the script to figure it out dynamically.
var columnsOfThumbnails = false;

var DHTMLgoodies_slideWidth = false;
var DHTMLgoodies_thumbTotalWidth = false;
var DHTMLgoodies_viewableWidth = false;

var DHTMLgoodies_thumbDiv = false;
var DHTMLgoodies_thumbSlideInProgress = false;

var leftArrowObj;
var rightArrowObj;
var thumbsColIndex = 1;
var thumbsLeftPos = false;

function initLabelsSlideShow() {
	leftArrowObj = document.getElementById('DHTMLgoodies_leftArrow');
	leftArrowObj.style.visibility='hidden';
	rightArrowObj = document.getElementById('DHTMLgoodies_rightArrow');
	leftArrowObj.style.cursor = 'pointer';
	rightArrowObj.style.cursor = 'pointer';
	leftArrowObj.onclick = moveThumbnails;
	rightArrowObj.onclick = moveThumbnails;
	
	DHTMLgoodies_slideWidth = 405;
	DHTMLgoodies_thumbDiv = document.getElementById('DHTMLgoodies_thumbs_inner');
	DHTMLgoodies_thumbDiv.style.left = '0px';

	var subDivs = DHTMLgoodies_thumbDiv.getElementsByTagName('DIV');
	DHTMLgoodies_thumbTotalWidth = 0;
	var tmpLeft = 0;
	for(var no=0;no<subDivs.length;no++){
		if(subDivs[no].className=='strip_of_thumbnails'){
			DHTMLgoodies_thumbTotalWidth = DHTMLgoodies_thumbTotalWidth + subDivs[no].offsetWidth;
			subDivs[no].style.left = tmpLeft + 'px';
			subDivs[no].style.top = '0px';
			tmpLeft = tmpLeft + subDivs[no].offsetWidth;
			}
		}
	DHTMLgoodies_viewableWidth = document.getElementById('DHTMLgoodies_thumbs').offsetWidth;
	document.getElementById('idFooterLabelsPanelOne').style.visibility = "visible";
	}

function moveThumbnails() {
	if(DHTMLgoodies_thumbSlideInProgress)
		return;
	DHTMLgoodies_thumbSlideInProgress = true;
	if(this.id=='DHTMLgoodies_leftArrow'){
		thumbsColIndex--;
		rightArrowObj.style.visibility='visible';
		if(DHTMLgoodies_thumbDiv.style.left.replace('px','')/1>=0){
			leftArrowObj.style.visibility='hidden';
			DHTMLgoodies_thumbSlideInProgress = false;
			return;
			}
		slideThumbs(slideSteps,0);
		}
	else{
		thumbsColIndex++;
		leftArrowObj.style.visibility='visible';
		var left = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;
		var showArrow = true;
// 		if(DHTMLgoodies_thumbTotalWidth + left - DHTMLgoodies_slideWidth <= DHTMLgoodies_viewableWidth)
  		if(DHTMLgoodies_thumbTotalWidth + left <= DHTMLgoodies_viewableWidth)
			showArrow = false;
		if(columnsOfThumbnails)
			showArrow = true;
		if(!showArrow){
			rightArrowObj.style.visibility='hidden';
			DHTMLgoodies_thumbSlideInProgress = false;
			return;
			}
		slideThumbs((slideSteps*-1),0);
		}
	}

function slideThumbs(speed,currentPos){
	var leftPos;
	if(thumbsLeftPos){
		leftPos= thumbsLeftPos;
		}
	else{
		var leftPos = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;
		thumbsLeftPos = leftPos;
		}
	currentPos = currentPos + Math.abs(speed);
	var tmpLeftPos = leftPos;
	leftPos = leftPos + speed;
	thumbsLeftPos = leftPos;
	DHTMLgoodies_thumbDiv.style.left = leftPos + 'px';

	if(currentPos<DHTMLgoodies_slideWidth)
		setTimeout('slideThumbs(' + speed + ',' + currentPos + ')', slideSpeed);
	else {
		if(tmpLeftPos>=0 || (columnsOfThumbnails && thumbsColIndex==1)){
			document.getElementById('DHTMLgoodies_leftArrow').style.visibility='hidden';
			}
		var left = tmpLeftPos;
		var showArrow = true;
		if(DHTMLgoodies_thumbTotalWidth + left <= DHTMLgoodies_viewableWidth)
			showArrow=false;
		if(columnsOfThumbnails){
			if((thumbsColIndex+1)<columnsOfThumbnails)
				showArrow=true;
			else
				showArrow = false;
			}
		if(!showArrow){
			document.getElementById('DHTMLgoodies_rightArrow').style.visibility='hidden';
			}
		DHTMLgoodies_thumbSlideInProgress = false;
		}
	}