function get_browser()
{
//Reihenfolge extrem wichtig!
var browser_opera     = navigator.userAgent.lastIndexOf("Opera");                 //Opera
var browser_aol       = navigator.userAgent.lastIndexOf("America Online Browser") //Aol
var browser_firefox   = navigator.userAgent.lastIndexOf("Firefox");               //Firefox
var browser_microsoft = navigator.userAgent.lastIndexOf("MSIE")                   //Microsoft, T-Online
var browser_konqueror = navigator.userAgent.lastIndexOf("KHTML")                  //Konqueror
var browser_netscape  = navigator.userAgent.lastIndexOf("Netscape");              //Netscape
var browser_string    = navigator.userAgent;                                      //kpl. Browser-Info
var browser_version;
var browser_position;
var browser_found     = "false";
var browser_html_in   = "<html><body bgcolor='#C0C0C0'><table align='center' width='100%' height='100%'><tr><td align='center' valign='middle' width='100%' height='100%'><font face='verdana,arial,helvetica' size=+1 color='#808080'>";
var browser_html_out  = "</font></td></tr></table></body></html>";
var browser_message   = "Ihre Browser-Version ist veraltet!<p>Um diese Seite korrekt darstellen zu können,<br>müssen Sie eine neuere Version Ihres Browser installieren!</font></td></tr></table></body></html>";
//alert (browser_string);
//Start Browser-Test:
if (browser_opera > -1 && browser_found == "false")
{
browser_version = browser_string.substr(browser_opera + 6, 3);
browser_found = "true";
   if (browser_version < 8.0)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>Opera - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   browser_found = "true";
   }
}
if (browser_aol > -1 && browser_found == "false")
{
browser_version = browser_string.substr(browser_aol + 23, 3);
browser_found = "true";
   if (browser_version < 1.1)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>AOL - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   browser_found = "true";
   }
}
if (browser_firefox > -1 && browser_found == "false")
{
browser_version = browser_string.substr(browser_firefox + 8, 3);
browser_found = "true";
   if (browser_version < 1.0)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>Firefox - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   }
}
if (browser_microsoft > -1 && browser_found == "false")
{
browser_version = browser_string.substr(browser_microsoft + 5, 3);
browser_found = "true";
   if (browser_version < 6.0)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>Microsoft Internet Explorer - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   }
}
if (browser_konqueror > -1 && browser_found == "false")
{
browser_version = browser_string.substr(browser_konqueror + 6, 3);
browser_found = "true";
   if (browser_version < 3.4)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>Konqueror - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   }
}
if (browser_netscape > -1 && browser_found == "false")
{
browser_string = browser_string.substr(browser_netscape, 15);
browser_position = browser_string.lastIndexOf("/");
browser_version = browser_string.substr(browser_position + 1, 3);
browser_found = "true";
   if (browser_version < 7.1)
   {
   document.write (browser_html_in);
   document.write (browser_string + "<p>Netscape - Version: " + browser_version + "<p>");
   document.write (browser_message);
   document.write (browser_html_out);
   browser_found = "true";
   }
}
}
