var loc = String(self.location)
var offset = loc.indexOf("/",7)                        // salta http:...
var cssdir = loc.substring(0, offset + 1) + "/www/retescuole/css/"     // dir css sotto root
if ((navigator.userAgent.indexOf('Mac') != -1))  
			if (navigator.appName.indexOf('Netscape','Explorer') != -1) { 
				document.write("<link rel=\"stylesheet\" href=\"" + cssdir + "mac_ie.css\">")
				} 
				else {  
					document.write("<link rel=\"stylesheet\" href=\"" + cssdir + "pc_ie.css\">")  
					}
	if (navigator.userAgent.indexOf('Win') != -1){  
			if (navigator.appName.indexOf('Netscape') != -1) { 
				document.write("<link rel=\"stylesheet\" href=\"" + cssdir + "pc.css\">") 
				} 
				else {  
					document.write("<link rel=\"stylesheet\" href=\"" + cssdir + "pc_ie.css\">")
					}
			} 
	if ((navigator.userAgent.indexOf("Linux") != -1))  {
            document.write("<link rel=\"stylesheet\" href=\"" + cssdir + "linux.css\">")
			}


ns4 = (document.layers)? 1:0
ie4 = (document.all)? 1:0
ie5 = (navigator.appVersion.indexOf("MSIE 5")>0)? 1:0

function WM_netscapeCssFix() {
  //thanks to webmonkey for the netscape fix! maybe it'll all be well in 5.0...
  if (document.WM.WM_netscapeCssFix.initWindowWidth != window.innerWidth || document.WM.WM_netscapeCssFix.initWindowHeight != window.innerHeight) {
    document.location = document.location;
  }
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}

}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
// -->

function apri(theURL,winName,features) { //v2.0
  var w;
  var h;
  var str;
  var inizio;
  var str;
  inizio = features.indexOf("width=") + 6;
  fine = features.indexOf(",",inizio);
  if (fine != -1) {
     str = features.substring(inizio,fine);
    } else {
     str = features.substring(inizio);
     }
  w = parseFloat(str)
  inizio = features.indexOf("height=") + 7;
  fine = features.indexOf(",",inizio);
  if (fine != -1) {
     str = features.substring(inizio,fine);
    } else {
     str = features.substring(inizio);
     }
  h = parseFloat(str)

  PosX = (screen.width - w) / 2;
  PosY = (screen.height - h) / 2;

  window.open(theURL,winName,features + ",left=" + PosX + ",top=" +
PosY+",screenX=" + PosX +",screenY=" + PosY);
}
// -->