JS判断IE版本并在页面显示内容

<script type="text/javascript">

var isIE = function (ver) {

var b = document.createElement('b')

b.innerHTML = '<!--[if IE ' + ver + ']><i></i><![endif]-->'

return b.getElementsByTagName('i').length === 1

}

if (isIE(5)) {

document.write('IE5?&nbsp;:-)&nbsp;放手吧哥们！<br>IE5?&nbsp;:-)&nbsp;Hi Guy Let It Go! <br>IE5?&nbsp;:-)&nbsp;손을 놓다 시다 지게!<br>IE5?&nbsp;:-)&nbsp;Пусти же чувак!<br>IE5?&nbsp;:-)&nbsp;Lâcher prise GeMen!<br>IE5?&nbsp;:-)&nbsp;Déjame UN!<br>IE5?&nbsp;:-)&nbsp;うたび手放し!')

}

if (isIE(6)) {

document.write('IE6?&nbsp;:-)&nbsp;放手吧哥们！<br>IE6?&nbsp;:-)&nbsp;Hi Guy Let It Go! <br>IE6?&nbsp;:-)&nbsp;손을 놓다 시다 지게!<br>IE6?&nbsp;:-)&nbsp;Пусти же чувак!<br>IE6?&nbsp;:-)&nbsp;Lâcher prise GeMen!<br>IE6?&nbsp;:-)&nbsp;Déjame UN!<br>IE8?&nbsp;:-)&nbsp;うたび手放し!')

}

if (isIE(7)) {

document.write('IE7?&nbsp;:-)&nbsp;放手吧哥们！<br>IE7?&nbsp;:-)&nbsp;Hi Guy Let It Go! <br>IE7?&nbsp;:-)&nbsp;손을 놓다 시다 지게!<br>IE7?&nbsp;:-)&nbsp;Пусти же чувак!<br>IE7?&nbsp;:-)&nbsp;Lâcher prise GeMen!<br>IE7?&nbsp;:-)&nbsp;Déjame UN!<br>IE7?&nbsp;:-)&nbsp;うたび手放し!')

}

if (isIE(8)) {

document.write('IE8?&nbsp;:-)&nbsp;放手吧哥们！<br>IE8?&nbsp;:-)&nbsp;Hi Guy Let It Go! <br>IE8?&nbsp;:-)&nbsp;손을 놓다 시다 지게!<br>IE8?&nbsp;:-)&nbsp;Пусти же чувак!<br>IE8?&nbsp;:-)&nbsp;Lâcher prise GeMen!<br>IE8?&nbsp;:-)&nbsp;Déjame UN!<br>IE8?&nbsp;:-)&nbsp;うたび手放し!')

}

</script>