//--- -------------------------------------------------------------------------------- --//
//--- PhoneNumber.AutoTab.js					                                       --//
//--- -------------------------------------------------------------------------------- --//
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;
}
//--- -------------------------------------------------------------------------------- --//
//--- PhoneNumber.AutoTab.js					                                 [End] --//
//--- -------------------------------------------------------------------------------- --//