人生過程精彩才是重點

function detectBrowser()//判斷是否用IE瀏覽器
 { 
  var sAgent = navigator.userAgent.toLowerCase();
  this.isIE = (sAgent.indexOf(”msie”)!=-1); //IE6.0-7
  this.isFF = (sAgent.indexOf(”firefox”)!=-1);//firefox
  this.isSa = (sAgent.indexOf(”safari”)!=-1);//safari
  this.isOp = (sAgent.indexOf(”opera”)!=-1);//opera
  this.isNN = (sAgent.indexOf(”netscape”)!=-1);//netscape
  this.isMa = this.isIE;//marthon
  this.isOther = (!this.isIE && !this.isFF && !this.isSa && !this.isOp && !this.isNN && !this.isSa);//unknown Browser
 }
 var oBrowser = new detectBrowser();
 if (!oBrowser.isIE)
 {
     alert(”Please use IE6.0/7.0(or above version).”);
 }