CSS-禁用a标签

<style>
        a.disabled {
            pointer-events: none;
            filter: alpha(opacity=50); /*IE滤镜，透明度50%*/
            -moz-opacity: 0.5; /*Firefox私有，透明度50%*/
            opacity: 0.5; /*其他，透明度50%*/
        }
    </style>

<a class="disabled"></a>