var  plugin = 0;
var  os_ver ;
var  bowser ;
var i1,i2 ;
var p_wk ;
var agent = navigator.userAgent;
var fp5;
var fp6;
var fp7;
var MainZoneTag;

if ( agent.indexOf('Win') > -1 ){
      os_ver = "Win" ;
}
else if ( agent.indexOf('Mac') > -1 ){
       os_ver = "Mac" ; 
}
else {
       os_ver = "Other" ; 
}

if ( agent.indexOf('MSIE') > -1 ){
       bowser = "IE";
}
else if  ( agent.indexOf('Mozilla/5') > -1 ){
       bowser = "NS6" ;
}
else if  ( agent.indexOf('Mozilla/4') > -1 ){
       bowser = "NS4" ;
}
else {
       bowser = "Other";   
}


   //OS別プラグイン判定//

   if ( os_ver == "Win") {  //Windows
      if ( bowser == "NS4" || bowser == "NS6" ) {  //NS
          for ( i1 = 0 ;  i1 < navigator.plugins.length ; i1++ ) {
                p_wk =  navigator.plugins[i1].description ;
                if (  p_wk.indexOf("Flash 5.0") != -1 || p_wk.indexOf("Flash 6.0") != -1  || p_wk.indexOf("Flash 7.0") != -1 ) {
                       plugin = 1 ;
                       break ;
                }
           }
      }
      else if ( bowser == "IE" ) {  //IE
                document.write("<SCRIPT LANGUAGE=VBScript\> \n") ;
                document.write("on error resume next \n") ;
                document.write("fp5 = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.5\"))) \n") ;
                document.write("fp6 = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.6\"))) \n") ;
                document.write("fp7 = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.7\"))) \n") ;
                document.write("<\/SCRIPT\> \n") ;      
                if (  fp5 == true || fp6 == true  || fp7 == true ) {
                       plugin = 1 ;
                }
       }
      else {  //NS,IE以外
          plugin = 0 ;
      }
   }
   else if ( os_ver == "Mac" ) {  //MacOS
      if ( bowser == "NS4" || bowser == "NS6" ) {  //NS
          for ( i1 = 0 ;  i1 < navigator.plugins.length ; i1++ ) {
                p_wk =  navigator.plugins[i1].description ;
                if (   p_wk.indexOf("Flash 5.0") != -1 || p_wk.indexOf("Flash 6.0") != -1  || p_wk.indexOf("Flash 7.0") != -1 ) {
                        plugin = 1 ;
                        break ;
                }
           }
       }
       else if ( bowser == "IE" ) {  //IE
             if ( agent.indexOf("MSIE 5") > -1 ) {  //IE5以上
                   for ( i1 = 0 ;  i1 < navigator.plugins.length ; i1++ ) {
                        p_wk =  navigator.plugins[i1].description ;
                        if (  p_wk.indexOf("Flash 5.0") != -1 || p_wk.indexOf("Flash 6.0") != -1  || p_wk.indexOf("Flash 7.0") != -1 ) {
                               plugin = 1 ;
                               break ;
                        }
                   }
             }
             else {  //IE5以外
                   plugin = 0 ;
             }
        }
        else {  //NS,IE5以外
             plugin = 0 ;
        }
   }
   else {  //Win,Mac以外
             plugin = 0 ;
   }

   //OS別プラグイン判定//


   //ファイル選択//

   if ( plugin == 1 ) {
		MainZoneTag = '<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" codebase=\"http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0\" width=\"760\" height=\"253\" id=\"top\" align=\"middle\"><param name=\"allowScriptAccess\" value=\"sameDomain\" /><param name=\"movie\" value=\"./swf/top.swf\" /><param name=\"quality\" value=\"high\" /><param name=\"bgcolor\" value=\"#ffffff\" /><embed src=\"./swf/top.swf\" quality=\"high\" bgcolor=\"#ffffff\" width=\"760\" height=\"253\" name=\"top\" align=\"middle\" allowScriptAccess=\"sameDomain\" type=\"application/x-shockwave-flash\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" /></object>';
   }
   else {
		MainZoneTag = '<img name=\"n2005_02_10\" src=\"img/flash.jpg\" width=\"760\" height=\"253\" border=\"0\" usemap=\"#m_2005_02_10\">';
    }