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_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_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];}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function checkProdCount(ProductCount)
{
	if(ProductCount < 1)
	{
		alert("Warning:  Cannot proceed to checkout.\nYou have no products in your shopping cart");
		return false;
	}
	else
	{
		return true;
	}
}


function changeImg(ImgFile, Caption)
{
	var Path = "images/Shop/Products/";
	
	document.getElementById('productImgBig').style.backgroundImage = 'url('+Path+ImgFile+')';
	document.getElementById('photocaption').innerHTML = Caption;
}

function updatePrice(OptionCount, OrgPrice)
{
	NewPrice = parseFloat(OrgPrice);
	NewDescription = "";
	
	//loop through each option
	for (var op = 0; op < OptionCount; op++)
	{
		//if the option value is not empty or the default option
		OptionID = 'Option'+op;
		if(document.getElementById(OptionID).value != "" && document.getElementById(OptionID).value != "--")
		{
			//set this options price (parseFloat makes sure it is read as number)
			OptionPrice = parseFloat(document.getElementById(OptionID).value);
			
			//if it is nagative it makes it a positive
			//and then subtracts
			if(OptionPrice < 0)
			{
				OptionPrice = Math.abs(OptionPrice);
				//alert(OptionPrice);
				NewPrice = parseFloat(NewPrice - OptionPrice);
			}
			else
			{
				//alert(OptionPrice);
				NewPrice = parseFloat(NewPrice + OptionPrice);
			}
			
			//alert(NewPrice);
		}
		
		OptiionDescID = 'OptionDesc'+op;
		//if the description field is not null and not the default
		if(document.getElementById(OptiionDescID).value != "" && document.getElementById(OptiionDescID).value != "--")
		{
			NewDescription += document.getElementById(OptiionDescID).value;
		}
	}
	//round the new price like currency
	NewPrice = Math.round(NewPrice*100)/100;
	
	document.getElementById('ProductPrice').value = NewPrice; //set prive value for cart
	document.getElementById('ProductDescription').value = NewDescription; //set description for cart
	document.getElementById('Price').innerHTML = "$" + NewPrice; //set price for display
	document.getElementById('ProdID').innerHTML = document.getElementById('ProductID').value; //set SKU for display
}

MM_preloadImages('images/but-flyin-over.gif','images/but-announcements-over.gif','images/but-stunting-over.gif','images/but-tutorials-over.gif','images/but-catalog-over.gif','images/but-purchase-over.gif');