function setCSS(theURL)
{
	var dirName = theURL;

	if(navigator.appVersion.indexOf("Mac") > 1){
	  // MAC IE NN
	  document.write('<LINK REL="stylesheet" type="text/css" HREF="' + dirName + 'css/mac.css">');
	} else {
	  if(navigator.appName.charAt(0) == "M"){
	    // WIN IE
	    document.write('<LINK REL="stylesheet" type="text/css" HREF="' + dirName + 'css/win_ie.css">');
	  } else {
	    // WIN NN or others
	    document.write('<LINK REL="stylesheet" type="text/css" HREF="' + dirName + 'css/other.css">');
	  }
	}
}