function entsub(e, loginForm, submitaction, action, useJSFunction) {
    //isNetscape=(document.layers);
    //keyStroke = eventChooser = (isNetscape)?event.which:window.event.keyCode;
    //keyStroke = (window.Event)? window.event.keyCode:event.which;
    var characterCode //literal character code will be stored in this variable
    if (e && e.which) { //if which property of event object is supported (NN4)
        characterCode = e.which; //character code is contained in NN4's which property
    } else {
        e = event;
        characterCode = e.keyCode; //character code is contained in IE's keyCode property
    }

    if (characterCode == 13) {
        //if (event && event.which == 13)
        if (submitaction != '' && submitaction != null) {
            loginForm.submitaction.value = submitaction;
        }
        if (action != '' && action != null) {
            loginForm.action.value = action;
        }
        if (useJSFunction == 'true') {
            submitPage();
        } else {
            loginForm.submit();
        }
        return false;
    } else {
        return true;
    }
}