[r113] touch forid doesn't work on ios 6 safari

It works in chrome on my desktop vista computer and an android phone, but not on my iphone 4s or ipad 3 running ios 6 in safari. It just returns 0.

http://www.amirai.net/bugs/touchforidbug.zip

Closing as not a bug: touch IDs are not guaranteed to start from 0. For example, on iOS the first touch has an ID well over a million (probably because it uses a system-wide counter for touch IDs). You need to receive a touch event and store its ID before you can use these expressions sensibly.