var isNN = (navigator.appName.indexOf("Netscape")!=-1);

function autoTab(input,len, e) {
    var keyCode = (isNN) ? e.which : e.keyCode; 
    var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46];
    if(input.value.length >= len && !containsElement(filter,keyCode)) {
        input.value = input.value.slice(0, len);
        input.form[(getIndex(input)+1) % input.form.length].focus();
    }

    function containsElement(arr, ele) {
        var found = false, index = 0;
        while(!found && index < arr.length)
        if(arr[index] == ele)
            found = true;
        else
            index++;
        return found;
    }

    function getIndex(input) {
        var index = -1, i = 0, found = false;
        while (i < input.form.length && index == -1)
            if (input.form[i] == input)index = i;
            else i++;
        return index;
    }
    
    return true;
}


function ClearAndShowConfirm(panelID, textboxID) {

    var panel = document.getElementById(panelID);
    var textbox = document.getElementById(textboxID);

    panel.style.visibility = "visible";
    panel.style.display = "block";
    try {
        panel.style.display = "table-row";
    }
    catch (err)
    {
        //just ignore this error, happens in IE because it doesn't support table-row as an option
    }
    textbox.value = "";
    textbox.focus();
}