Validator.js 表单验证插件
var Validator = {
isEmail : function(s) {
return this.test(s, '^[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+@[-!#$%&\'*+\\/0-9=?A-Z^_`a-z{|}~]+\.[-!#$%&\'*+\\./0-9=?A-Z^_`a-z{|}~]+$');
},

isAbsUrl : function(s) {
return this.test(s, '^(news|telnet|nttp|file|http|ftp|https)://[-A-Za-z0-9\\.]+\\/?.*$');
},

isSize : function(s) {
return this.test(s, '^[0-9]+(%|in|cm|mm|em|ex|pt|pc|px)?$');
},

isId : function(s) {
return this.test(s, '^[A-Za-z_]([A-Za-z0-9_])*$');
},

isEmpty : function(s) {
var nl, i;

if (s.nodeName == 'SELECT' && s.selectedIndex < 1)
return true;

if (s.type == 'checkbox' && !s.checked)
return true;

if (s.type == 'radio') {
for (i=0, nl = s.form.elements; i<nl.length; i++) {
if (nl[i].type == "radio" && nl[i].name == s.name && nl[i].checked)
return false;
}

return true;
}

return new RegExp('^\\s*$').test(s.nodeType == 1 ? s.value : s);
},

isNumber : function(s, d) {
return !isNaN(s.nodeType == 1 ? s.value : s) && (!d || !this.test(s, '^-?[0-9]*\\.[0-9]*$'));
},

test : function(s, p) {
s = s.nodeType == 1 ? s.value : s;

return s == '' || new RegExp(p).test(s);
}
};

var AutoValidator = {
settings : {
id_cls : 'id',
int_cls : 'int',
url_cls : 'url',
number_cls : 'number',
email_cls : 'email',
size_cls : 'size',
required_cls : 'required',
invalid_cls : 'invalid',
min_cls : 'min',
max_cls : 'max'
},

init : function(s) {
var n;

for (n in s)
this.settings[n] = s[n];
},

validate : function(f) {
var i, nl, s = this.settings, c = 0;

nl = this.tags(f, 'label');
for (i=0; i<nl.length; i++)
this.removeClass(nl[i], s.invalid_cls);

c += this.validateElms(f, 'input');
c += this.validateElms(f, 'select');
c += this.validateElms(f, 'textarea');

return c == 3;
},

invalidate : function(n) {
this.mark(n.form, n);
},

reset : function(e) {
var t = ['label', 'input', 'select', 'textarea'];
var i, j, nl, s = this.settings;

if (e == null)
return;

for (i=0; i<t.length; i++) {
nl = this.tags(e.form ? e.form : e, t[i]);
for (j=0; j<nl.length; j++)
this.removeClass(nl[j], s.invalid_cls);
}
},

validateElms : function(f, e) {
var nl, i, n, s = this.settings, st = true, va = Validator, v;

nl = this.tags(f, e);
for (i=0; i<nl.length; i++) {
n = nl[i];

this.removeClass(n, s.invalid_cls);

if (this.hasClass(n, s.required_cls) && va.isEmpty(n))
st = this.mark(f, n);

if (this.hasClass(n, s.number_cls) && !va.isNumber(n))
st = this.mark(f, n);

if (this.hasClass(n, s.int_cls) && !va.isNumber(n, true))
st = this.mark(f, n);

if (this.hasClass(n, s.url_cls) && !va.isAbsUrl(n))
st = this.mark(f, n);

if (this.hasClass(n, s.email_cls) && !va.isEmail(n))
st = this.mark(f, n);

if (this.hasClass(n, s.size_cls) && !va.isSize(n))
st = this.mark(f, n);

if (this.hasClass(n, s.id_cls) && !va.isId(n))
st = this.mark(f, n);

if (this.hasClass(n, s.min_cls, true)) {
v = this.getNum(n, s.min_cls);

if (isNaN(v) || parseInt(n.value) < parseInt(v))
st = this.mark(f, n);
}

if (this.hasClass(