/***********************************************************************************************
	
	Copyright (c) 2005 - Alf Magne Kalleland post@dhtmlgoodies.com
	
	UPDATE LOG:
	
	March, 10th, 2006 : Added support for a message while large image is loading
	
	Get this and other scripts at www.dhtmlgoodies.com
	
	You can use this script freely as long as this copyright message is kept intact.
	
	***********************************************************************************************/ 
  function Browser() {

  var ua, s, i;

  this.isIE    = false;  // Internet Explorer
  this.isOP    = false;  // Opera
  this.isNS    = false;  // Netscape
  this.version = null;

  ua = navigator.userAgent;

  s = "Opera";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isOP = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as Netscape 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }

  s = "MSIE";
  if ((i = ua.indexOf(s))) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }
}

var browser = new Browser();

	var displayWaitMessage=true;	// Display a please wait message while images are loading?
  	
   		
	var activeImage = false;
	var imageGalleryLeftPos = false;
	var imageGalleryWidth = false;
	var imageGalleryObj = false;
	var maxGalleryXPos = false;
	var slideSpeed = 0;
	var imageGalleryCaptions = new Array();
	function startSlide(e)
	{
		if(document.all)e = event;
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = '/images/imageslideshow/' + this.id + '_over.gif';	
		if (browser.isIE){
			if(this.id=='arrow_right'){
				slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 2);
				slideSpeed = -1*slideSpeedMultiply;
				slideSpeed = Math.max(-4,slideSpeed);
			}else{			
				slideSpeedMultiply = 3 - Math.floor((e.clientX - this.offsetLeft) / 2);
				slideSpeed = 1*slideSpeedMultiply;
				slideSpeed = Math.min(3,slideSpeed);
				if(slideSpeed<0)slideSpeed=3;
			}
		}else{
			if(this.id=='arrow_right'){
				slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
				slideSpeed = -1*slideSpeedMultiply;
				slideSpeed = Math.max(-15,slideSpeed);
			}else{			
				slideSpeedMultiply = 15 - Math.floor((e.clientX - this.offsetLeft) / 5);
				slideSpeed = 1*slideSpeedMultiply;
				slideSpeed = Math.min(15,slideSpeed);
				if(slideSpeed<0)slideSpeed=15;
			}
		}
	}
	
	
	
	function releaseSlide()
	{
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = '/images/imageslideshow/' + this.id + '.gif';
		slideSpeed=0;
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0){
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
			if(leftPos>maxGalleryXPos){
				leftPos = maxGalleryXPos;
				slideSpeed = 0;
				
			}
			if(leftPos<minGalleryXPos){
				leftPos = minGalleryXPos;
				slideSpeed=0;
			}
			
			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',20);
		
	}
	
	function showImage()
	{
		if(activeImage){
			activeImage.style.filter = 'alpha(opacity=70)';	
			activeImage.style.opacity = 0.7;
		}	
		this.style.filter = 'alpha(opacity=100)';
		this.style.opacity = 1;	
		activeImage = this;	
	}
	
	function initSlideShow()
	{
	 if(document.getElementById('arrow_left')){
		document.getElementById('arrow_left').onmouseover = startSlide;
		document.getElementById('arrow_left').onmouseout = releaseSlide;
		document.getElementById('arrow_right').onmouseover = startSlide;
		document.getElementById('arrow_right').onmouseout = releaseSlide;

		
		imageGalleryObj = document.getElementById('theImages');
		imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 80;
		maxGalleryXPos = imageGalleryObj.offsetLeft; 
		minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;
		var slideshowImages = imageGalleryObj.getElementsByTagName('IMG');
		for(var no=0;no<slideshowImages.length;no++){
			slideshowImages[no].onmouseover = showImage;
		}
		
		var divs = imageGalleryObj.getElementsByTagName('DIV');
		for(var no=0;no<divs.length;no++){
			if(divs[no].className=='imageCaption')imageGalleryCaptions[imageGalleryCaptions.length] = divs[no].innerHTML;
		}
		gallerySlide();
		}
	}
	function alertme(){
	alert("what");
	}
	
	function showPreview(imagePath,imageIndex,largestImage,icaption){ 
      currentLargestImage = largestImage; 
       
      var previewP = document.getElementById('previewPane'); 
      var aTag = previewP.getElementsByTagName('A')[0]; 
      aTag.href = largestImage; 
      aTag.title = icaption;
      var subImages = previewP.getElementsByTagName('IMG'); 
      if(subImages.length==0){ 
         var img = document.createElement('IMG'); 
         document.getElementById('previewPane').appendChild(img); 
      }else img = subImages[0]; 
       
      if(displayWaitMessage){ 
         document.getElementById('waitMessage').style.display='inline'; 
      } 
      document.getElementById('largeImageCaption').style.display='none'; 
      img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); }; 
      img.src = imagePath; 
       
   }
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
		document.getElementById('largeImageCaption').style.display='block';
		
	}
var xmlHttp

function showPhoto(str)
{
document.getElementById("previewPane").innerHTML='<span style="width:auto;height:250px;font-size:10px;">Loading...<br><img src="/images/indicator_verybig.gif" style="width:128px;height:128px"></span>';
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
var url="http://www.ametco.com/showPhoto.php"
url=url+"?ID="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
} 


function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
//alert(holder);
new Effect.Appear('previewPane');
document.getElementById("previewPane").innerHTML=xmlHttp.responseText;
} 
} 

//END Representative Stuff
function GetXmlHttpObject()
{
  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  return xmlHttp;
}
	window.onload = initSlideShow;