// JavaScript Document

function choixStylesheet(){
  var stylesheet;
  if(document.layers){
    //Netscape 4
	stylesheet = "stylesheet_NS.css";
  } else if(document.getElementById && !document.all){
    //Netscape 6
	stylesheet = "stylesheet_NS.css";
  } else if(!window.print && document.all){
    //IE 4
	stylesheet = "stylesheet_IE.css"; 
  } else if(document.getElementById && document.all){
    //IE 5
	stylesheet = "stylesheet_IE.css";
  } else {
    stylesheet = "stylesheet_IE.css";
  }
  document.write("<link rel='stylesheet' type='text/css' href='includes/"+stylesheet+"'>");
}

choixStylesheet();