So in normal situation where jquery i allowed and i can bind the field onkeyup i would use:

$('#something').keyup(function(e) {

    var enterKey = 13;

    if (e.which == enterKey){

        somefunction();

     }

 });

however i cannot use this and will have to use something like:

<input id=something onkeyup=onkeyup_colfield_check(this) type=text>

 function onkeyup_colfield_check(e){

    var enterKey = 13;

        if (e.which == enterKey){

            somefunction();

        }

}

However this doesn't work like the above.

how can i achieve the same result like the first example but with something like that?