Navigateur = "";
Browser = "";

//alert(navigator.userAgent);

//détection du type d'ordinateur
if(navigator.userAgent.indexOf('Mac') != -1)
{
	Navigateur = "MAC";
}else{
	Navigateur = "PC";
}

//détection du type de navigateur
if(navigator.userAgent &&navigator.userAgent.indexOf("Opera")>=0){
	Browser = "OPERA";
	//alert(Browser);	
}else if( navigator.userAgent &&navigator.userAgent.indexOf("MSIE")>=0 ){
	Browser = "MSIE";
	//alert(Browser);
}else if(navigator.userAgent && (navigator.userAgent.indexOf("Netscape")>=0 || navigator.userAgent.indexOf("Gecko/20030208")>=0)){
	Browser = "NETSCAPE";
	//alert(Browser);	
}else if(navigator.userAgent &&navigator.userAgent.indexOf("Firefox")>=0){
	Browser = "FIREFOX";
	//alert(Browser);
}else if(navigator.userAgent &&navigator.userAgent.indexOf("Safari")>=0){
	Browser = "SAFARI";
	//alert(Browser);	
}

//détection de la version de navigateur
if( navigator.userAgent &&navigator.userAgent.indexOf("MSIE 4")>=0 ){
	version = "4";
}else{
	version = "";
}


var agt=navigator.userAgent.toLowerCase(); 
// *** BROWSER VERSION *** 
// Note: On IE5, these return 4, so use is_ie5up to detect IE5. 
var is_major = parseInt(navigator.appVersion); 
var is_minor = parseFloat(navigator.appVersion); 
// Note: Opera and WebTV spoof Navigator.  We do strict client detection. 
// If you want to allow spoofing, take out the tests for opera and webtv. 
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) 
&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) 
&& (agt.indexOf('webtv')==-1)); 
var is_nav2 = (is_nav && (is_major == 2)); 
var is_nav3 = (is_nav && (is_major == 3)); 
var is_nav4 = (is_nav && (is_major == 4)); 
var is_nav4up = (is_nav && (is_major >= 4)); 
var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) || 
(agt.indexOf("; nav") != -1)) ); 
var is_nav5 = (is_nav && (is_major == 5)); 
var is_nav5up = (is_nav && (is_major >= 5)); 
var is_ie   = (agt.indexOf("msie") != -1); 
var is_ie3  = (is_ie && (is_major < 4)); 
var is_ie4  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) ); 
var is_ie4up  = (is_ie  && (is_major >= 4));
var is_safari   = (agt.indexOf("safari") != -1);
	
if (Navigateur == "PC" && Browser == "MSIE") { document.write('<link rel="stylesheet" href="css/layout-iepc.css" type="text/css" media="screen">'); }
if (Navigateur == "PC" && Browser == "FIREFOX") { document.write('<link rel="stylesheet" href="css/layout-ffpc.css" type="text/css" media="screen">'); }
if (Navigateur == "PC" && Browser == "NETSCAPE") { document.write('<link rel="stylesheet" href="css/layout-nspc.css" type="text/css" media="screen">'); }
if (Navigateur == "PC" && Browser == "OPERA") { document.write('<link rel="stylesheet" href="css/layout-opera.css" type="text/css" media="screen">'); }																   
if (Navigateur == "MAC" && Browser == "FIREFOX") { document.write('<link rel="stylesheet" href="css/layout-ffmac.css" type="text/css" media="screen">'); }
if (Navigateur == "MAC" && Browser == "NETSCAPE") { document.write('<link rel="stylesheet" href="css/layout-nsmac.css" type="text/css" media="screen">'); }
if (Navigateur == "MAC" && Browser == "SAFARI") { document.write('<link rel="stylesheet" href="css/layout-safari.css" type="text/css" media="screen">'); }