function detectBrowser()
{
var browser = navigator.appName
if(navigator.userAgent.indexOf("MSIE")>0){
var b_version = navigator.appVersion
var version = b_version.split(";");
var trim_Version = version[1].replace(/[ ]/g,"");
if ((browser=="Netscape"||browser=="Microsoft Internet Explorer"))
{
if(trim_Version == 'MSIE8.0' || trim_Version == 'MSIE7.0' || trim_Version == 'MSIE6.0'){
alert('请使用IE9.0版本以上进行访问');
return;
}
}
}
}
detectBrowser();