/*属性条件选择器，确保仅文本框才设置验证图标，IE6不支持*/
input[type="text"].error
{
background:transparent url(images/csg-4b3053a79397a.png) no-repeat scroll right -66px;
}
input[type="text"].valid
{
background:transparent url(images/csg-4b3053a79397a.png) no-repeat scroll right 0px;
}
/*下划线hack IE6,使IE6的所有Input元素都显示验证图标（radio）等会有问题*/
input.error
{
_background:transparent url(images/csg-4b3053a79397a.png) no-repeat scroll right -66px;
}
input.valid
{
_background:transparent url(images/csg-4b3053a79397a.png) no-repeat scroll right 0px;
}
label.error
{
color:Red;
}