version=parseInt(navigator.appVersion); 

if (navigator.appVersion.indexOf('5.')>-1){

version=5

}; 

if (navigator.appVersion.indexOf('6.')>-1){

version=6

};

if (navigator.appVersion.indexOf('7.')>-1){

version=7

};

browser='OTHER';

if (navigator.appName=='Netscape'){

browser='NS'+version;

}

if (navigator.appName=='Microsoft Internet Explorer'){

browser='MSIE'+version;

}

if (navigator.appVersion.indexOf('MSIE 4')>0) {

browser='MSIE4';

}

if(browser == 'NS5'){

browser='NS6'

};

//Internet Explorer

if (browser=='MSIE4') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/styles.css">');

}

if (browser=='MSIE5') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/styles.css">');

}

if (browser=='MSIE6') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/styles.css">');

}

if (browser=='MSIE7') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/FX_styles.css">');

}

//Netscape

if (browser=='NS4') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/FX_styles.css">');

}

if (browser=='NS6') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/FX_styles.css">');

}

if (browser=='NS7') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/FX_styles.css">');

}

//everyone else

if (browser=='OTHER') {
document.write('<link rel="stylesheet" type="text/css" href="stylesheet/FX_styles.css">');
}