var browser=navigator.appName;
	 var version=navigator.appVersion
	 var ver1=version.substring(0,1)
	 var ver2=version.lastIndexOf("MSIE")
	 var ver3=version.substring(ver2+5,ver2+6)
	
	 function itsNetscape() {
	  document.write('<LINK REL=StyleSheet HREF="../CSS/netscape_giris.css" TYPE="text/css">')
	 }	
	 function itsMsie() {
	document.write('<LINK REL=StyleSheet HREF="../CSS/explorer_giris.css" TYPE="text/css">')
	 }
	 function itsMac() {
	document.write('<LINK REL=StyleSheet HREF="../CSS/mac_giris.css" TYPE="text/css">')
	 }
	 
	 if (navigator.appVersion.indexOf("Mac") > 0)	{
	 itsMac();
	 } else {
			  if ((browser == "Netscape") && (ver1 >= 4)){
			  itsNetscape();
			 }
			 else{
			  itsMsie();
			 }
	 }