//script to detect browser and java version, used by all applets,
//output:
// netmac=0; means it is either Mac/IE or non-Mac : can use applet tag
//  netmac = 1 means this is Mac/Netscape and Netscape is older than 4.76
// netmac=2; this is Mac/Netscape earlier than 4.76 w/o MRJ Plugin
// appletWillRun()  :can load the applet
// hasJava : can load applet in some form or another, see netmac...

var agt=navigator.userAgent.toLowerCase();

// detect browser version
// Note: On IE5, these return 4, so use is_ie5up to detect IE5.
var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);

        // *** BROWSER TYPE ***
        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_opera = (agt.indexOf('opera')!=-1);
	var is_safari = (agt.indexOf('safari')!=-1);
	var is_konqueror = (agt.indexOf('konqueror')!=-1);
	var is_opera6up = (is_opera && (is_major >= 6));
        var is_nav4up = (is_nav && (is_major >= 4));
	var is_nav6up = (is_nav && (is_major >= 6));
        var is_ie   = (agt.indexOf("msie") != -1);
        var is_ie3  = (is_ie && (is_major < 4));
        var is_ie4  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) );
        var is_ie5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
        var is_ie5up  = (is_ie  && !is_ie3 && !is_ie4);
        var is_firefox =  (agt.indexOf("firefox") != -1);

	// *** PLATFORM ***
        var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
	var is_mac   = (agt.indexOf("mac")!=-1);
        var is_sun   = (agt.indexOf("sunos")!=-1);
        var is_irix  = (agt.indexOf("irix") !=-1);
        var is_hpux  = (agt.indexOf("hp-ux")!=-1);
        var is_aix   = (agt.indexOf("aix") !=-1);
        var is_linux = (agt.indexOf("inux")!=-1);
        var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
        var is_unixware = (agt.indexOf("unix_system_v")!=-1);
        var is_mpras    = (agt.indexOf("ncr")!=-1);
        var is_reliant  = (agt.indexOf("reliantunix")!=-1);
        var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) ||
               (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) ||
               (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1));
        var is_sinix = (agt.indexOf("sinix")!=-1);
        var is_freebsd = (agt.indexOf("freebsd")!=-1);
        var is_bsd = (agt.indexOf("bsd")!=-1);
        var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux ||
                     is_sco ||is_unixware || is_mpras || is_reliant ||
                     is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);

function isMacClassic() {
	return (is_mac && !isMacX());
}

function isMacX() {
	if (isMacJaguar()) return true;
	if (agt.indexOf("omniweb") != -1) return true;
	for (var i = 0; i < navigator.plugins.length; i++) {
		if (navigator.plugins[i].name.indexOf("OJI") > -1) return true;
		if (navigator.plugins[i].name.indexOf("Default Plugin Carbon.cfm") > -1) return true;
	}
	return false;
}

function isMacJaguar() {
	return (is_mac && javaPlugin()); // we know java plugin means 10.2 or higher
}

function appletWillRun() {
	if (is_ie4 || is_ie5up || (is_nav4up && is_minor >= 4.08) || is_opera6up || is_konqueror || isMacJaguar())
		return true;
	return false;
}

function javaPlugin() {

		if (is_safari || is_opera6up || is_firefox || is_konqueror) return true;   // we know safari and opera use java plugin
 		for (var i = 0; i < navigator.plugins.length; i++) {
  			if (navigator.plugins[i].name.indexOf("Java Plug-in") > -1) return true;
			if (navigator.plugins[i].name.indexOf("Java Embedding Plug") > -1) return true;
 		}
		return false;
	}

function mrj()  {
	if (isMacX()) return true;
	for (var i = 0; i < navigator.plugins.length; i++) {
		if (navigator.plugins[i].name.indexOf("MRJ") > -1) return true;
	}
	return false;
}

var netmac=0;			// netmac = 0 means it is either Mac/IE or non-Mac
if (!is_win){
	if (isMacClassic() && is_nav && is_minor < 5) {
   	if (mrj()) {
      netmac=1;	// netmac = 1 means this is Mac/Netscape and Netscape is older than 4.76
    }
    else {
      netmac=2;	// this is Mac/Netscape earlier than 4.76 w/o MRJ Plugin
    }
  }
}
var hasJava = !((!navigator.javaEnabled()) && !is_mac && (navigator.appName=="Netscape") && (parseInt(navigator.appVersion)>=5));

function writeUpdateJavaMessage(){
//if Java is disabled show an error message
  document.write("<center><table width='90%' border='1' bordercolor='#000000'>");
  document.write("<tr>");
  document.write("<td bgcolor='#336633'>");
  document.write("<div align='center'><font color='#FFFFFF'>Java is Disabled!</font></div>");
  document.write("</td>");
  document.write("</tr>");
  document.write("<tr>");
  document.write("<td>");
  document.write("<table width='100%' border='0' cellpadding='0' cellspacing='20'>");
  document.write("<tr>");
  document.write("<td width='3%'><img src='error.gif' width='61' height='61'></td>");
  document.write("<td width='97%'>");
  document.write("<p>You must enable Java in your browser in order to upload files.</p>");
  if (is_opera) {
    document.write("<p><b>To enable Java in Opera:</b></p>");
    document.write("<p>- Go to File - Preferences<br>- Click on Multimedia<br>- Check \"Enable Java\"<br>- Reload this page</p>");
  }
  else if (document.all) {
    document.write("<p><b>To enable Java in Internet Explorer:</b></p>");
    if (is_win)
          document.write("<p>- Go to Tools - Internet Options<br>- Click on the Security Tag<br>- Select Medium Security Level for Internet Zone<br>- Reload this page</p>");
    else if (is_mac)
          document.write("<p>- Go to Edit - Preferences<br>- Click on Java<br>- Check \"Enable Java (Apple MRJ)\"<br>- Reload this page</p>");
  }
  else if (document.layers) {
    document.write("<p><b>To enable Java in Netscape Navigator 4.X:</b></p>");
    document.write("<p>- Go to Edit - Preferences<br>- Click on Advanced<br>- Check \"Enable Java\"<br>- Reload this page</p>");
  }
  document.write("</td>");
  document.write("</tr>");
  document.write("</table>");
  document.write("</td>");
  document.write("</tr>");
  document.write("</table></center>");
  //end of error message
}