formatting time field HMM to H:MM

So you want the field value to be entered in a variety of formats, and then converted to a standard fomat after entry? 

This is possible, but you'll need to write a set of custom scripts. 

1. Restricting entry to a specific set of format. This has to be done as a non-commit custom keystroke script.

2. Converting entered data into a standard format. This could be done as a will-commit custom keystroke or a validation script.

The 2nd part is easier. The way to do this coversion is to use a regular expression to recognize the front and end parts of the entered data and then insert the  ":".

Heres a script that will perform the conversion.

if(event.willCommit)

{

    event.value = event.value.toString().replace(/(\d{1,2})[\,\.]?(\d{2})/,"$1:$2");

}

The first part gets more complicated. Do you know anyting about scripting?