Hi,

I have a need to rewrite URLs (javascript, images, etc) in my layouts to a different format in some circumstances. ex:
original: http://www.mysite.com/images/blue.gif
new: http://www.myNewSite.com/newimages/blue.gif

I have coded a method that can do this. How do I invoke this method from my layouts? I tried a custom macro, but I cannot understand how to pass in the URL to change.

Using 5.5R2

{% ProcessCustomMacro("ConvertUrl", "|(originalURL)http://www.mysite.com/images/blue.gif") %}

case "converturl":
match = true;
string originalURL = sender.CurrentParameters[0, 1];
result = Common.ConvertURL(new UriBuilder(originalURL)).ToString();
break;

even with simpler code, it does not execute:
case "converturl":
match = true;
result = "executed";
break;

it does execute if i use only {% ProcessCustomMacro("ConvertURL", "") %}, but I need to provide the URL to convert. how can I do this?