// JavaScript Document

function browsniffer() {
  var browsername;
	
  if (document.all) {
	  browsername = "ie5+";
		
  } else if (document.getElementById) {
	  browsername = "ns6+";
		
	} else {
	  return alert("Attenzione! \nPer una corretta consultazione del sito è necessario utilizzare Internet Explorer 5 (o superiore) oppure Netscape 6 (o superiore).");
	}
	
return browsername;
}

var mybrowser;
mybrowser = browsniffer();


function setLayerX(thelayername, offset) {

  var xOrigin, xpos, myLayer, layerwidth, layoutwidth, pagewidth;

  if (mybrowser == "ie5+") {
    myLayer = eval("document.all." + thelayername + ".style");
    layerwidth = myLayer.pixelWidth;
    layoutwidth = 760;
    pagewidth = document.body.clientWidth;

    xOrigin = Math.round((pagewidth - layoutwidth)/2);
    if (xOrigin < 0) {xOrigin = 0}

    xpos = xOrigin + offset;

    //alert(xpos + " - " + pagewidth + " - " + layerwidth + " - " + xOrigin);
		myLayer.left = xpos;
		
  } else {
	
    myLayer = document.getElementById(thelayername).style;
    layerwidth = parseInt(myLayer.width);
    layoutwidth = 760;
    pagewidth = document.body.offsetWidth;

    xOrigin = Math.round((pagewidth - layoutwidth)/2);
    if (xOrigin < 0) {xOrigin = 0}

    xpos = xOrigin + offset;

    //alert(xpos + " - " + pagewidth + " - " + layerwidth + " - " + xOrigin);
		myLayer.left = xpos;
	}
}

function shower(spanid) {

  var mySpan, SpanStr;

  if (mybrowser == "ie5+") {
    SpanStr = "document.all." + spanid + ".style";
		mySpan = eval(SpanStr);
    //alert("display: " + mySpan.display + " - " + SpanStr);
		if (mySpan.display == "none") {
		  mySpan.display = "block";
	  } else {
		  mySpan.display = "none";
		}
		
  } else {	
    mySpan = document.getElementById(spanid).style;
		//alert(mySpan.display);
		if (mySpan.display == "none") {
		  mySpan.display = "block";
	  } else {
		  mySpan.display = "none";
		}
	}
}

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_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  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 OpenWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function limitText(limitField, limitCount, limitNum) {
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}