var WebPubCartContents = "".split("|");var PRCVICart_Count = 0;var WebPubCartFilterFields = new Array();WebPubCartFilterFields[WebPubCartFilterFields.length] = ["RecordType","ILL Items Loaned From Another Library"];    
 
  /* Client-side Functions */
  
	function IsCartFilter()
	{
		if ("undefined" == typeof(WebPubCartFilterFields) || null == WebPubCartFilterFields)
		{
			return false;
		}
		return true;
	}
	
	function Contains(arr, x)
	{
		for (var i=0;i<arr.length;i++)
		{
			if (arr[i] == x)
			{
				return true;
			}
		}
		return false;
	}
	
	function Trim(str)
	{
		return(str.replace(/^\s+/,'').replace(/\s+$/,''));
	}
	
	function RecordItem(status)
	{
		switch(status)
		{
			case "active":
				this.status = status;
				break;
			case "inactive":
				this.status = status;
				break;
			case "blacklist":
				this.status = status;
				break;
			default:
				this.status = "no status";
		}
	}
	
	function RecordID(id)
	{
		this.id = id.substring("WebPubCartToken_".length, id.length);
	}
	
	function CartReplacement()
	{
		DoReplace(document.getElementsByTagName('div'));
	}

	function DoReplace(els)
	{
		var ActiveImage = '/visualimpairment/Layout/Images/addtocart_active.gif';
		var InactiveImage = '/visualimpairment/Layout/Images/addtocart_inactive.gif';
		var BlacklistImage = '/visualimpairment/layout/images/blacklist_space.gif';
		var ImageElement = document.createElement('img');
		var LinkElement = document.createElement('a');
		for (var i=0;i<els.length;i++)
		{
			if (els[i].id.indexOf("WebPubCartToken") == 0)
			{
				var img = ImageElement.cloneNode(true);
				var link = LinkElement.cloneNode(true);
				var CurrentRecord = new RecordItem();
				
				// Blacklisted?
				if (IsCartFilter() == true && els[i].hasChildNodes() == true)
				{
					//match WebPubCartFilterFields to field values in els[i]
					var arrElFields = els[i].firstChild.nodeValue.split("|");
					for (var j=0;j<arrElFields.length;j++)
					{
						arrElFields[j] = Trim(arrElFields[j]);
						var entries = arrElFields[j].substring(arrElFields[j].indexOf("=")+1, arrElFields[j].length).split("::");
						var label = arrElFields[j].substr(0, arrElFields[j].indexOf("="));
						
						for (var k=0;k<WebPubCartFilterFields.length;k++)
						{
							if (label == WebPubCartFilterFields[k][0])
							{
								for (var m = 0; m < entries.length; m++)
								{
									if (entries[m] != null && entries[m] != "")
									{
										if (Contains(WebPubCartFilterFields[k],entries[m]) == true)
										{
											//blacklist match found
											CurrentRecord.status = "blacklist";
										}
									}
								}
							}
						}
					}
				} // IsCartFilter()
				
				// In cart?
				var CurrentID = new RecordID(els[i].id);
				if (Contains(WebPubCartContents,CurrentID.id) == true)
				{
					if (CurrentRecord.status != "blacklist")
					{
						CurrentRecord.status = "inactive";
					}
				}
				else
				{
					if (CurrentRecord.status != "blacklist")
					{
						CurrentRecord.status = "active";
					}
				}
					
				// Replace token
				switch(CurrentRecord.status)
				{
					case "active":
						link.href = "/visualimpairment/UpdateCart.aspx?AddItem=" + CurrentID.id;
						img.src = ActiveImage;
						img.title = "Click to add to cart";
						img.border = 0;
						link.appendChild(img);
						if (els[i].hasChildNodes() == true)
						{
							els[i].replaceChild(link,els[i].firstChild);
						}
						else
						{
							els[i].appendChild(link);
						}
						els[i].style.visibility = 'visible';
						break;
					case "inactive":
					  link.href = "/visualimpairment/UpdateCart.aspx?RemoveItem=" + CurrentID.id;
						img.src = InactiveImage;
						img.title = "Click to remove from cart";
						img.border = 0;
						link.appendChild(img);
						if (els[i].hasChildNodes() == true)
						{
							els[i].replaceChild(link,els[i].firstChild);
						}
						else
						{
							els[i].appendChild(link);
						}
						els[i].style.visibility = 'visible';
						break;
					case "blacklist":
						if (BlacklistImage != '')
						{
							img.src = BlacklistImage;
							img.title = "This item cannot be added to your cart";
							if (els[i].hasChildNodes() == true)
							{
								els[i].replaceChild(img,els[i].firstChild);
							}
							else
							{
								els[i].appendChild(img);	
							}
							els[i].style.visibility = 'visible';
						}
						else
						{
							if (els[i].hasChildNodes() == true)
							{
								els[i].replaceChild(link,els[i].firstChild);
							}
							else
							{
								els[i].appendChild(link);	
							}
						}
						break;
					default:
						if (els[i].hasChildNodes() == true)
						{
							els[i].replaceChild(link,els[i].firstChild);
						}
						else
						{
							els[i].appendChild(link);	
						}
				}

			}
		}
	}

	/* Client-side action onload */
	
	CartReplacement();