var isNN = (navigator.appName.indexOf("Netscape")!=-1); 
function autoTab(input,len, e,next) { 
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); 
document.getElementById(next).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 autoTab2(input,len, e,move) { 
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); 

document.getElementById(move).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; 
}