<!--
/*
 File		: detect.js

 Purpose    : This javascript file contains the functions for checking browser version and flash version.
 
 Functions  : detectFlash()
	      - check the version of the flash plugin, if the version of the flash plugins is lower than 5.0, a warning message will be displayed
	      detectBrowser()
	      - check the type and version of the browser
	      Get_Cookie(name)
	      - get the cookies
	      Set_Cookie(name,value,expires,path,domain,secure)
	      - set the cookies

 Modification History :
 Version    Date	    By		    Description
 -----------------------------------------------------------------------
 1st	    2002-05-13	   Vivian Au	    First Version
 -----------------------------------------------------------------------
*/

//links for upgrading browsers and flash plugins
    var ielink = 'http://www.microsoft.com/windows/ie/downloads/default.asp';
    var nslink = 'http://home.netscape.com/computing/download/index.html?cp=hop04ft6';
    var flashlink = 'http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash';

    function detectFlash()
    {
    
	if (navigator.appName.indexOf("Netscape") != -1 && navigator.appVersion.charAt(0) >= 3) {
	    // Set these local variables to avoid the Netscape 4 crashing bug.
	    thearray = navigator.plugins
	    arraylen = thearray.length
    
	    // Step through each plugin in the array.
	    for (var i=0; i < arraylen; i++)
	    {
	      // Set these local variables to avoid the Netscape 4 crashing bug.
	      theplugin = thearray[i]
	      thename	= theplugin.name
	      thedesc	= theplugin.description
	      // If the plugin is Shockwave...
	      if (thename == "Shockwave for Director")
	      {
		// ...find the version number.
		var versionLoc = thedesc.indexOf("version ");
		var versionString = thedesc.substring(versionLoc + 8,thedesc.length);
    
		if (versionString == '7 .0.3')		   { swVersion = 7.03000; }
		else if (versionString == '7.0.3')	   { swVersion = 7.03000; }
		else if (versionString.indexOf('7.') > -1) { swVersion = 7.00000; }
		else if (versionString.indexOf('8.') > -1) { swVersion = 8.00000; }
		else if (versionString.indexOf('6.') > -1) { swVersion = 6.00000; }
		else { swVersion = integer(versionString) ; }
	      }
    
	      // If we're dealing with a Flash plugin...
	      if (thedesc.indexOf("Shockwave Flash ") != -1)
	      {
		// ...then find the version number.
		var versionLoc = thedesc.indexOf("Shockwave Flash ");
		var versionString = thedesc.substring(versionLoc + 16,thedesc.length);
		var minorVersion;
		var majorVersion;
    
		// Look for an " r".  Whatever's after the "r" is the minor version. For
		versionLoc = versionString.indexOf(" r");
		if (versionLoc != -1)
		{
		  // If there is an "r", then everything before the " r" is the major version...
		  majorVersion = versionString.substring(0,versionLoc);
    
		  // ...and everything after is the minor version.
		  minorVersion = versionString.substring(versionLoc + 2,versionString.length);
    
		  // Format the final version string as x.xyy where x.x is the major version
		  // and yy is the minor release version.
		  flashVersion = parseFloat(majorVersion + (minorVersion < 100 ? "0" : "") + (minorVersion < 10 ? "0" : "") + minorVersion);
		}
		else
		{
		  // If there is no "r", then set the version string to be all of the version info.
		  flashVersion = parseFloat(versionString);
		}
	      }
		}
	    // check flash plugin for Netscape
		if (flashVersion >= 5) {
			flash = 1;
		} else {
			flash = 0;
		}
	} else if (navigator.appName.indexOf('Microsoft') != -1 && navigator.appVersion.indexOf('Mac') == -1 && navigator.appVersion.indexOf('3.1') == -1) {
	//checking flash plugin for internet explorer for Mac
		flash = 1;
    
	} else {
	//checking flash plugin for internet explorer for PC
		if (navigator.appVersion.indexOf('MSIE')!=-1 && navigator.appVersion.indexOf('4.5') == -1)
		{	
			if (navigator.plugins["Shockwave Flash"]) 
				flash = 1;
			else
				flash = 0;
		}else
			flash = 0;
	}
    //getConMsg is declared in common.js
	if (!flash && (!confirm(getConMsg('dlflash')))) {
	    if (home){
			window.location = "noflash.htm"; // no flash
	    } else {	
// set the cookie if the user's browser was checked
// Set_cookie is declared in detect.js
//		  Set_Cookie("checkedFlash", 1,"","\/" + curLang + "\/");
		Set_Cookie("checkedFlash", 1);
	    }
	} else if (!flash) {
	    window.open(flashlink, 'dlflash', "" , "\/");
	}
    }

    function detectBrowser(){
	// convert all characters to lowercase to simplify testing 
	var agt=navigator.userAgent.toLowerCase(); 

	// *** BROWSER VERSION *** 
	// check browser type (Internet Explorer)
	var is_major = parseInt(navigator.appVersion); 
	var is_minor = parseFloat(navigator.appVersion); 
	var ie_ver =  parseFloat(agt.substring(30, 33));

	// check browser type (netscape)
	var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1)); 
	var is_nav4up = (is_nav && (is_minor >= 4.76)); 
    
	var is_ie   = (agt.indexOf("msie") != -1); 
	var is_ie5up  = (is_ie	&& ie_ver >= 5.5); 

	var dlbrowser = false;
	if (!is_nav4up && !is_ie5up) {
	    dlbrowser = true;
	}
	
	if (dlbrowser) {
	//getConMsg is declared in common.js
	    if (confirm(getConMsg('dlbrowser'))) {
		if (ns)
		    window.location = ielink;
		 else 
		    window.location = ielink; 
	    } else {
//		  Set_Cookie("checkedBrowser", 1,"","\/" + curLang + "\/");
		Set_Cookie("checkedBrowser", 1, "" , "\/");
	    }
	}
    }
    
    function Get_Cookie(name) {
	var start = document.cookie.indexOf(name+"=");
	var len = start+name.length+1;
	if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
	if (start == -1) return null;
	var end = document.cookie.indexOf(";",len);
	if (end == -1) end = document.cookie.length;
	return unescape(document.cookie.substring(len,end));
    }
 

    
    function Set_Cookie(name,value,expires,path,domain,secure) {
	document.cookie = name + "=" +escape(value) +
	    ( (expires) ? ";expires=" + expires.toGMTString() : "") +
	    ( (path) ? ";path=" + path : "") + 
	    ( (domain) ? ";domain=" + domain : "") +
	    ( (secure) ? ";secure" : "");
    }

    if (Get_Cookie("checkedBrowser") != 1)
	detectBrowser();
    if (Get_Cookie("checkedFlash") != 1)
	detectFlash();
//-->