try to find login form, user and pass input nodes - used on http://cryptero.com

gistfile1.js

var c_user, c_pass, c_form;

(function() {
	for (var i=0;document.forms[i]; i++) {
		for (j=0;document.forms[i][j];j++) {
			if(document.forms[i][j].type=='text') {
				c_user = document.forms[i][j]
			}
			if(document.forms[i][j].type=='password') {
				c_form = document.forms[i]
				c_pass = document.forms[i][j]
				return;
			}
		}
	}
})();