var width=0;
 
if (self.screen) {     // for NN4 and IE4
       swidth = screen.width
}
else if (self.java) {   // for NN3 with enabled Java
      var jkit = java.awt.Toolkit.getDefaultToolkit();
      var scrsize = jkit.getScreenSize();       
      swidth = scrsize.width; 
}

if (swidth < 1280) {
document.write("<link rel='stylesheet' type='text/css' href='styles_1024.css'>");
}else if(swidth >= 1280){
document.write("<link rel='stylesheet' type='text/css' href='styles_1280.css'>");
}