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_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_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 disableButton (button)
{
	button.className = 'buttonRegular';
	if (document.all || document.getElementById)
		button.disabled = true;
	else if (button) {
		button.oldOnClick = button.onclick;
		button.onclick = null;
		button.oldValue = button.value;
		button.value = 'DISABLED';
	}
}

function enableButton (button)
{
	if (document.all || document.getElementById)
		button.disabled = false;
	else if (button) {
		button.onclick = button.oldOnClick;
		button.value = button.oldValue;
	}
	button.className = 'buttonRegular';
}

function deleteOption (select,button)
{
	for (var i=(select.options.length-1); i >= 0; i--) {
		if (select.options[i].selected) {
			select.options[i] = null;
		}
	}
	select.selectedIndex = -1;
	disableButton(button);
}


function checkSelect (select,button)
{
	if (select.selectedIndex == -1) {
		disableButton(button);
	}
	else {
		enableButton(button);
	}
}

function centerPopupWin()
{
	if (!document.all) {
		var x = opener.screenX + (opener.outerWidth - window.outerWidth) / 2;
		var y = opener.screenY + (opener.outerHeight - window.outerHeight) / 2;
		window.moveTo(x, y);
	}
	else {
		var ch = document.body.clientHeight;
		var cw = document.body.clientWidth;
		window.resizeBy(document.body.offsetWidth - cw, document.body.offsetHeight - ch);
		var W = document.body.offsetWidth;
		var H = 2 * document.body.offsetHeight - ch;
		var x = (screen.availWidth - W) / 2;
		var y = (screen.availHeight - H) / 2;
		window.moveTo(x, y);
	}
}



function apri_chiudi_layer(nomelayer) {
	
	if (document.getElementById(nomelayer).style.display == "none") {
		document.getElementById(nomelayer).style.display = "block";
	} else {
		document.getElementById(nomelayer).style.display = "none";
	}
}