$(document).ready(function() {
	
	var form = document.getElementById('loginForm');
	var chars = "0123456789abcdefghiklmnopqrstuvwxyz";
	var randomstring = '';
	for (var i=0; i<32; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
		randomstring += chars.substring(rnum,rnum+1);
	}
	form.requestToken.value = randomstring;
	
	$('#submit-btn').click(function() {
		form.pw.value = SHA1(form.password.value + form.requestToken.value);
		form.password.value = '';
		form.submit(); 
	});
});