var browserName = navigator.appName;
var browserVersion = parseInt(navigator.appVersion);
var browser;

if (browserName == "Netscape" && browserVersion == 5) {
    browser = "nn6";
}
else if (browserName == "Netscape" && browserVersion == 4) {
    browser = "nn4";
}
else if (browserName == "Microsoft Internet Explorer" && 
         browserVersion == 4 && 
         navigator.appVersion.indexOf("MSIE 6.0") != -1) {
    browser = "ie6";  
}
else if (browserName == "Microsoft Internet Explorer" && 
         browserVersion == 4 && 
         navigator.appVersion.indexOf("MSIE 5.5") != -1) {
    browser = "ie55";
}
else if (browserName == "Microsoft Internet Explorer" && 
         browserVersion == 4 && 
         navigator.appVersion.indexOf("MSIE 5.0") != -1) {
    browser = "ie5";
}
else if (browserName == "Microsoft Internet Explorer" 
         && browserVersion == 4) {
    browser = "ie4";
}

// Handle browser-specific code
if ((browser == "nn4") && (navigator.appVersion.indexOf('Mac') != -1))

{
    
     document.write('<LINK REL=STYLESHEET HREF="cartoonsmac4.css" TYPE="text/css">');
     
 }    
     else{
     document.write('<LINK REL=STYLESHEET HREF="cartoonsbasic.css" TYPE="text/css">')
}