if (document.getElementsByTagName) { 
var inputElements = document.getElementsByTagName("input"); 
for (i=0; inputElements[i]; i++) { 
if (inputElements[i].className && (inputElements[i].className.indexOf("disableAutoComplete") != -1)) { 
inputElements[i].setAttribute("autocomplete","off"); 
}//if current input element has the disableAutoComplete class set. 
}//loop thru input elements 
}//basic DOM-happiness-check