// JavaScript Document


function Popup(apri, fh , fw, scroll) {
	var h = fh;
	var w = fw;
	var l = Math.floor((screen.width-w)/2);
	var t = Math.floor((screen.height-h)/2);
	var stile = "width=" + w + ",height=" + h + ",top=" + t + ",left=" + l + ", status=no, menubar=no, toolbar=no scrollbars=no";
	window.open(apri, "", stile);
}

function PopupScroll(apri, fh , fw) {
	var h = fh;
	var w = fw;
	var l = Math.floor((screen.width-w)/2);
	var t = Math.floor((screen.height-h)/2);
	var stile = "width=" + w + ",height=" + h + ",top=" + t + ",left=" + l + ", status=no, menubar=no, toolbar=no scrollbars=yes";
	window.open(apri, "", stile);
}

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_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_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 show_layer( layer_n ){


		if( document.all )
			browser = "explorer"
		else if( document.getElementById )
			browser = "firefox"

  		if( browser == "explorer" ){

			document.all[ 'layer_' + layer_n ].style.visibility = 'visible'
			document.all[ 'layer_' + layer_n ].style.position = 'fixed'

			i = 0;
			do{
			
				if( document.all[ 'layer_' + i ] )
					if( i != layer_n ){
						document.all[ 'layer_' + i ].style.visibility = 'hidden'
						document.all[ 'layer_' + i  ].style.position = 'absolute'
					}
				i++;
			}
			while( document.getElementById( 'layer_' + i ) )
			
		}
		else{
			

			
			document.getElementById( 'layer_' + layer_n ).style.visibility = 'visible'
			document.getElementById( 'layer_' + layer_n ).style.position = 'relative'

			i = 0;
			do{
			
				if( document.all[ 'layer_' + i ] )
					if( i != layer_n ){
						document.getElementById( 'layer_' + i ).style.visibility = 'hidden'
						document.getElementById( 'layer_' + i ).style.position = 'absolute'
					}
				i++
			}
			while( document.getElementById( 'layer_' + i ) )

		}

}

function show(number) {


	var aeroporti = document.getElementById("trasporti1");
	var navi = document.getElementById("trasporti2");
	var treni = document.getElementById("trasporti3");
	var bus = document.getElementById("trasporti4");
	var autonoleggio = document.getElementById("trasporti5");

	aeroporti.style.display = 'none';
	navi.style.display = 'none';
	treni.style.display = 'none';
	bus.style.display = 'none';
	autonoleggio.style.display = 'none';

	if (number==1) {
		aeroporti.style.display = 'block';
		navi.style.display = 'none';
		treni.style.display = 'none';
		bus.style.display = 'none';
		autonoleggio.style.display = 'none';	
	}

	if (number==2) {
		aeroporti.style.display = 'none';
		navi.style.display = 'block';
		treni.style.display = 'none';
		bus.style.display = 'none';
		autonoleggio.style.display = 'none';
	}

	if (number==3) {
		aeroporti.style.display = 'none';
		navi.style.display = 'none';
		treni.style.display = 'block';
		bus.style.display = 'none';
		autonoleggio.style.display = 'none';
	}
	if (number==4) {
		aeroporti.style.display = 'none';
		navi.style.display = 'none';
		treni.style.display = 'none';
		bus.style.display = 'block';
		autonoleggio.style.display = 'none';
	}
	if (number==5) {
		aeroporti.style.display = 'none';
		navi.style.display = 'none';
		treni.style.display = 'none';
		bus.style.display = 'none';
		autonoleggio.style.display = 'block';
	}
}