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