试下这个,进行相应判断:
var browser=navigator.appName;
var b_version=navigator.appVersion;
var version=b_version.split(";");
var trim_Version=version[1].replace(/[ ]/g,"");
if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE9.0"){
dragdiv.style.top = t;
dragdiv.style.height = obj.offsetHeight;
}
var isChrome = navigator.userAgent.toLowerCase().match(/chrome/) != null;
if (isChrome) {
alert('Chrome');
}
var userAgent = window.navigator.userAgent.toLowerCase();