var currentPic = 0;

<!--
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->


// Example:
// preloadAlternates( '01.gif', '02.gif' ); 
function preloadAlternates()
{
	var args = preloadAlternates.arguments;
	
	if (args.length <= 1)
	{
		var btnPrevious = getPageElement("btnPrevious");
		btnPrevious.className = "ImageNavInactive";
		btnPrevious.innerText = "";
		//btnPrevious.style.visibility = "hidden";
		
		var btnNext = getPageElement("btnNext");
		btnNext.className = "ImageNavInactive";
		btnNext.innerText = "";
		//btnNext.style.visibility = "hidden";
	}
	
	document.alternateImages = new Array(args.length);
  
	for(var i=0; i<args.length; i++)
	{
		document.alternateImages[i] = new Image;
		document.alternateImages[i].src = args[i];
	}
	
	//alert("This product has " + document.alternateImages.length + " hero shot(s)!");
}

// Get image by index
function processIndex(index)
{
	getPageElement("imgAlternate").src = document.alternateImages[index].src;
}

// Get image by index
function processImage(imgName)
{
	getPageElement("imgAlternate").src = imgName;
}

// Get the previous image
function processPrevious()
{
	if (currentPic == 0)
	{
		currentPic = document.alternateImages.length - 1;
	}
	else
	{
		currentPic--;
	}
	getPageElement("imgAlternate").src = document.alternateImages[currentPic].src;
}

// Get the next image
function processNext()
{
	if (currentPic == document.alternateImages.length - 1)
	{
		currentPic = 0;
	}
	else
	{
		currentPic++;
	}
	
	getPageElement("imgAlternate").src = document.alternateImages[currentPic].src;
}

function alternatePopUp(url)
{
	url = url + '?pid=' + currentPic;
	window.open(url,'Enlarged','toolbar=1,location=1,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=540,height=540')
}

function pressPopUp(url)
{
	navigateUrl = 'prFrames.tpl?pageID=' + url;
	window.open(url,'Enlarged','toolbar=1,location=1,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=650,height=600')
}

function getPageElement(id)
{
	//"NN4";
	if(document.layers)
	{
		return document.layers[id];
	}
	
	//"ie"    
	if(document.all)
	{
		return document.all[id];
	}
	
	//"NN6";    
	if(!document.all && document.getElementById)
	{
		return document.getElementById(id);
	}
	
	return false;
}