i found this plugin
autotab and validation as you can see in there's demos in the page .. and it's working quiet perfect with autotab .. it changes the focus from an input after reaching the maxlength .. but i have a little problem .. i want to validate a unique form with "Day" only .. so i created this ..
jsfiddle
what is the correct regex pattern to use please ? i've checked every possible combination but not giving me the result i want !