<SCRIPT LANGUAGE=java script>
   
   <!--
   
   var RealMode=0;
   
   var RealPlayer5=0;
   
   var RealPlayer4=0;
   
   var RealPlayerG2=0;
   
   
   if (navigator.userAgent.indexOf("MSIE")< 0 ){
   
   numPlugins = navigator.plugins.length;
   
   for (i = 0; i < numPlugins; i++){
   
   plugin = navigator.plugins;
   
   if (plugin.name.substring(0,10)=="RealPlayer"){
   
   RealMode=1;
   
   }
   
   }
   
   }
   
   // 以下代码通过VBScript的CreateObject()函数动态的创建RealPlayer对象
   
   document.write("<SCRIPT LANGUAGE=VBScript\> \n");
   
   document.write("on error resume next \n");
   
   document.write("RealPlayerG2 = (NOT IsNull(CreateObject("rmocx.RealPlayer G2 Control")))\n");
   
   document.write("RealPlayer5 = (NOT IsNull(CreateObject("RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)")))\n");
   
   document.write("RealPlayer4 = (NOT IsNull(CreateObject("RealVideo.RealVideo(tm) ActiveX Control (32-bit)")))\n");
   
   document.write("</SCRIPT\> \n");
   
   if ( RealPlayerG2 || RealPlayer5 || RealPlayer4 ){
   
   //可以在此处添加<object>对象
   
   }else if ( RealMode ){ // NetScape浏览器用户
   
   // 可以在此处加入<embed>对象
   
   }else{
   
   window.location.replace("install.htm"); // 转入install.htm页面指导用户进行安装
   
   }
   
   -->
   
   </Script>
这个代码，不行提示错误，script 不能相切，，，