function teknik()
{
var isletimsistemi="Undefined";
var tarayici="Undefined";
var agt=navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();
var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);
var iePos  = appVer.indexOf('msie');
if (iePos !=-1) {
is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)))
is_major = parseInt(is_minor);
}
var nav6Pos = agt.indexOf('netscape6');
if (nav6Pos !=-1) {
is_minor = parseFloat(agt.substring(nav6Pos+10))
is_major = parseInt(is_minor)
}
var is_opera = (agt.indexOf("opera") != -1);
if (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1)
tarayici="Opera 2";
if (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1)
tarayici="Opera 3";
if (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1)
tarayici="Opera 4";
if (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1)
tarayici="Opera 5";
if (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1)
tarayici="Opera 6";
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
&& (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
if (is_nav)
tarayici="Netscape";
var is_nav2 = (is_nav && (is_major == 2));
if (is_nav2)
tarayici="Netscape 2";
var is_nav3 = (is_nav && (is_major == 3));
if (is_nav3)
tarayici="Netscape 3";
var is_nav4 = (is_nav && (is_major == 4));
if (is_nav4)
tarayici="Netscape 4";
var is_nav4up = (is_nav && is_minor >= 4);  
var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
(agt.indexOf("; nav") != -1)) );
var is_nav6   = (is_nav && is_major==6);   
if (is_nav6)
tarayici="Netscape 6";
var is_nav6up = (is_nav && is_minor >= 6) 
var is_nav5   = (is_nav && is_major == 5 && !is_nav6); 
if (is_nav5)
tarayici="Netscape 5";
var is_nav5up = (is_nav && is_minor >= 5);
var is_ie   = ((iePos!=-1) && (!is_opera));
if (is_ie)
tarayici="Internet Explorer";
var is_ie3  = (is_ie && (is_major < 4));
if (is_ie3)
tarayici="Internet Explorer 3";
var is_ie4   = (is_ie && is_major == 4);
if (is_ie4)
tarayici="Internet Explorer 4";
var is_ie4up = (is_ie && is_minor >= 4);
var is_ie5   = (is_ie && is_major == 5);
if (is_ie5)
tarayici="Internet Explorer 5";
var is_ie5up = (is_ie && is_minor >= 5);
var is_ie5_5  = (is_ie && (agt.indexOf("msie 5.5") !=-1)); 
if (is_ie5_5)
tarayici="Internet Explorer 5.5";
var is_ie5_5up =(is_ie && is_minor >= 5.5);                
var is_ie6   = (is_ie && is_major == 6);
if (is_ie6)
tarayici="Internet Explorer 6";
var is_ie6up = (is_ie && is_minor >= 6);
var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));
if (is_win95)
isletimsistemi="Windows 95";
var is_win16 = ((agt.indexOf("win16")!=-1) ||
(agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) ||
(agt.indexOf("windows 16-bit")!=-1) );
var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
(agt.indexOf("windows 16-bit")!=-1));
if (is_win31)
isletimsistemi="Windows 3.1";
var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));   
if (is_winme)
isletimsistemi="Windows ME";
var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
if (is_winnt)
isletimsistemi="Windows NT";
var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1)); 
if (is_win2k)
isletimsistemi="Windows 2000";
var is_winxp = ((agt.indexOf("windows nt 5.1")!=-1)); 
if (is_winxp)
isletimsistemi="Windows XP";
var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
if (is_win98)
isletimsistemi="Windows 98";
var is_win32 = (is_win95 || is_winnt || is_win98 ||
((is_major >= 4) && (navigator.platform == "Win32")) ||
(agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));
if ((agt.indexOf("os/2")!=-1) ||
(navigator.appVersion.indexOf("OS/2")!=-1) ||
(agt.indexOf("ibm-webexplorer")!=-1))
isletimsistemi="OS/2";
if (agt.indexOf("mac")!=-1)
isletimsistemi="Macintosh";
var unix_mi=false;
unix_mi|= (agt.indexOf("sunos")!=-1);
unix_mi|= (agt.indexOf("irix") !=-1);    // SGI
unix_mi|= (agt.indexOf("hp-ux")!=-1);
unix_mi|= (agt.indexOf("aix") !=-1);      // IBM
unix_mi|= (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
unix_mi|= (agt.indexOf("unix_system_v")!=-1);
unix_mi|= (agt.indexOf("ncr")!=-1);
unix_mi|= (agt.indexOf("reliantunix")!=-1);
unix_mi|= ((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));
unix_mi|= (agt.indexOf("freebsd")!=-1);
unix_mi|= (agt.indexOf("bsd")!=-1);
unix_mi|= (agt.indexOf("x11")!=-1);
if (unix_mi)
isletimsistemi="Unix";
if (agt.indexOf("inux")!=-1)
isletimsistemi="Linux";
if (is_win){
if (is_ie){
if (is_ie4up){
versionOk=true;}
else{
versionOk=false;}}
else if (is_nav) {
if (nav6version>=6.0){
versionOk=true;}
else{
versionOk=false;}}
else {
versionOk=false;}}
else {
versionOk=true;}
var uyari="";
if (!versionOk)
uyari="\nİnternet Şubemizi sorunsuz kullanabilmeniz için tarayıcınızın üst sürümünü Teknik Konular sayfamızdan yüklemeniz gereklidir.\n";
alert("\nOperating System: " + isletimsistemi + "\n" + "Browser: " + tarayici + "\n" + uyari);
}