<script language="javascript">
function getIEVersion()
{
if(navigator.appName == "Microsoft Internet Explorer")
{
if(navigator.appVersion.match(/7./i)=='7.')
{
alert( '当前浏览器是IE 7' )
}
if(navigator.appVersion.match(/6./i)=='6.')
{
alert( '当前浏览器是IE 6' )
}
..........................................................
..........................................................
}
}
</script>
<input type="button" name="getIEVersion" value="获取当前浏览器版本" onclick="getIEVersion();" />