function appendinputTypeClasses() {  
if (!document.getElementsByTagName) return;  


var inputs = document.getElementsByTagName('input');  
var inputLen = inputs.length;  

    for (i=0;i<inputLen;i++) { 
    if ( inputs[i].getAttribute('type') ) inputs[i].className += ' '+inputs[i].getAttribute('type');
    } 
} 

window.onload = appendinputTypeClasses;