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_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')?'inline':(v=='hide')?'none':'inline'; }
	obj.display=v; }
}

function openCenteredWindow(url, name, width, height, parms) 
{
	var left = Math.floor( (screen.width - width) / 2);
	var top = Math.floor( (screen.height - height) / 2);
	var winParms = "top=" + top + ",left=" + left + ",height=" + height + ",width=" + width;
	if (parms) { winParms += "," + parms; }
	var win = window.open(url, name, winParms);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
	return win;
}

function EnterPressed(evt)
{
	evt = (evt) ? evt : (window.event) ? event : null;
	if (evt) 
	{
		var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0));
		if (charCode == 13) return true;
	}
	
	return false;
}

/* Controlla che l'input sia un numero intero */
function ValidateInt(evt) 
{
	evt = (evt) ? evt : (window.event) ? event : null;
	if (evt) 
	{
		var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0));
		if ((charCode < 48 || charCode > 57) && charCode != 8 && charCode != 9)
			return false;
	}
	return true;
}

/* Verifica se il numero è un intero valido */
function CheckInt(theField) 
{
	if (isNaN(theField.value)) 
	{
		alert('Inserted number not valid!');
		theField.value = '';
	}
}

/* Controlla che l'input sia un numero intero o sia uguale a ch */
function ValidateDate(evt, chCodeSeparatore) 
{
	// Il separatore di default è lo slash
	if (chCodeSeparatore == null || chCodeSeparatore == "") chCodeSeparatore = 47
	
	evt = (evt) ? evt : (window.event) ? event : null;
	if (evt) 
	{
		var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0));
		if (charCode == chCodeSeparatore) return true;
		if ((charCode < 48 || charCode > 57) && charCode != 8 && charCode != 9)
			return false;
	}
	return true;
}