
<!--
/*-----------------------------------------------------------------------------------------
** FILE NAME			: autotab.js
** AUTHOR NAME			: Girish Kumar
** DATE CREATED		: 13-06-2001
** BRIEF DESCRIPTION	: The script automatically take focus from the current object to
**							  the next focusable object in the current form. Hidden tags are
**							  considered to be non-focusable.
** 					
** DEPENDENCIES		:
** HISTORY LOG			:
** 						Date		Modified By		Details
** 						12-06-2001	Girish Kumar	Creation
**-----------------------------------------------------------------------------------------
*/

//-------------------------------------------------------------------
// getElementIndex(input_object)
//   Pass an input object, returns index in form.elements[] for the object
//   Returns -1 if error
//-------------------------------------------------------------------
function getElementIndex(obj) {
	var theform = obj.form;
	for (var i=0; i<theform.elements.length; i++) {
		if (obj.name == theform.elements[i].name) {
			return i;
			}
		}
	return -1;
	}

// -------------------------------------------------------------------
// tabNext(input_object)
//   Pass an form input object. Will focus() the next field in the form
//   after the passed element.
//   a) Will not focus to hidden or disabled fields
//   b) If end of form is reached, it will loop to beginning
//   c) If it loops through and reaches the original field again without
//      finding a valid field to focus, it stops
// -------------------------------------------------------------------
function tabNext(obj) {
	if (navigator.platform.toUpperCase().indexOf("SUNOS") != -1) {
		obj.blur(); return; // Sun's onFocus() is messed up
		}
	var theform = obj.form;
	var i = getElementIndex(obj);
	var j=i+1;
	if (j >= theform.elements.length) { j=0; }
	if (i == -1) { return; }
	while (j != i) {
		if ((theform.elements[j].type!="hidden") && 
		    (theform.elements[j].name != theform.elements[i].name) && 
			(!theform.elements[j].disabled)) {
			theform.elements[j].focus();
			break;
			}
		j++;
		if (j >= theform.elements.length) { j=0; }
		}
	}

function jump(obj)
	{
	if(obj.value.length == obj.maxLength)
		{
		tabNext(obj);
		}
	}
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;
}
//  End -->