// Browzer Check start
   nua = navigator.userAgent; //common to

// Win or Mac
   var iswin = navigator.platform.indexOf('Win') != -1 ; // Win
   var ismac = navigator.platform.indexOf('Mac') != -1 ; // MAC

// Browzer
   var B_IE = (navigator.appName).indexOf("Internet Explorer") != -1 ;
   var B_NN = (navigator.appName).indexOf("Netscape") != -1 ;

//Browzer Opera
	var isOp6 = nua.indexOf("Opera/6.") != -1 || nua.indexOf("Opera 6.") != -1 ;
	var isOp7 = nua.indexOf("Opera/7.") != -1 || nua.indexOf("Opera 7.") != -1 ; //Opera

// IE
   var isIE4 = navigator.userAgent.indexOf("MSIE 4.") != -1 ; //IE4
   var isIE5 = navigator.userAgent.indexOf("MSIE 5.") != -1 ; //IE5
   var isIE6 = navigator.userAgent.indexOf("MSIE 6.") != -1 ; //IE6

//NetScape
   var isNN4 = navigator.userAgent.indexOf("Mozilla/4.") != -1 ; //NN4
   var isNN6 = navigator.userAgent.indexOf("Netscape6/6.") != -1 ; //NN6
   var isNN7 = navigator.userAgent.indexOf("Netscape/7.") != -1 ; //NN7

//Mozilla
   var isMo5 = navigator.userAgent.indexOf("Mozilla/5.") != -1 ; //Mozilla

//CHECK START
if(isOp6){ document.write("<link rel='stylesheet' href='css/op6.css' type='text/css' media='screen'>") }
else if(isOp7){ document.write("<link rel='stylesheet' href='css/op7.css' type='text/css' media='screen'>") }
else if(B_NN){
 if (isNN6){ document.write("<link rel='stylesheet' href='css/nn6.css' type='text/css' media='screen'>")}
 else if (isNN7){document.write("<link rel='stylesheet' href='css/nn7.css' type='text/css' media='screen'>")}
 else if (isMo5){document.write("<link rel='stylesheet' href='css/mz1.css' type='text/css' media='screen'>")}
 else {document.write("<link rel='stylesheet' href='css/nn4.css' type='text/css' media='screen'>")}
}
else if ( B_IE ){ 
 if( iswin ){ 
   if(isIE4){document.write("<link rel='stylesheet' href='css/ie5.css' type='text/css' media='screen'>")}
   else if(isIE5){document.write("<link rel='stylesheet' href='css/ie5.css' type='text/css' media='screen'>")}
   else if(isIE6){document.write("<link rel='stylesheet' href='css/ie6.css' type='text/css' media='screen'>")}
   else {document.write("<link rel='stylesheet' href='css/nn4.css' type='text/css' media='screen'>")}
 }
 else if( ismac ){
   if(isIE5){document.write("<link rel='stylesheet' href='css/ie5mac.css' type='text/css' media='screen'>")}
   else {document.write("<link rel='stylesheet' href='css/nn4.css' type='text/css' media='screen'>")}
 }
}
else { document.write("<link rel='stylesheet' href='css/nn4.css' type='text/css' media='screen'>") }
