<style type="text/css">

        .mask {

            position: absolute;

            width: 290px;

            height: 96px;

            z-index: 1;

            filter: alpha(opacity=0);

            opacity: 0;

            background: #ffffff;

        }

    </style>

 <div style="position: relative">

        <div class="mask"></div>

        <iframe allowtransparency="true" frameborder="0" width="290" height="96" scrolling="no" src="http://tianqi.2345.com/plugin/widget/index.htm?s=1&z=3&t=0&v=0&d=2&k=&f=1&q=1&e=1&a=1&c=71144&w=290&h=96"></iframe>

    </div>