禁止选择DIV内的文本(css,js写法)

css:
<span style="font-family:SimSun;font-size:18px;">/* 禁止选择div内的文字 */
#hall_body {
    -moz-user-select: none; /*火狐*/
    -webkit-user-select: none; /*webkit浏览器*/
    -ms-user-select: none; /*IE10*/
    -khtml-user-select: none; /*早期浏览器*/
    user-select: none;
}</span>

js:

<div onselectstart="return false" onselect="document.selection.empty()">text</div>