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_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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 openWindow(url,w,h) {
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openWindow', 'toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function openWindow2(url,w,h) {
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openWindow', 'toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function openBlankWindow(url,w,h) {
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openWindow', 'toolbar=yes,location=yes,directories=yes,status=yes,scrollbars=yes,resizable=yes,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function openSubWindow(url,w,h) {
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openSubWindow', 'toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function openSubWindow2(url,w,h) {
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openSubWindow', 'toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function openHtmlEditor(url) {
	var w = 740;
	var h = 540;
	var l = (screen.width/2) - w/2;
	var t = (screen.height/2) - h/2;
	win = window.open(url, 'openHtmlEditor', 'toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,copyhistory=yes,width='+w+',height='+h+',left='+l+',top='+t);
}

function ConfirmCancel(CancelURL, CancelWIDTH, CancelHEIGHT) {
	if (confirm('ATTENZIONE: Sei sicuro di voler eliminare l\'oggetto selezionato?')) {
		openWindow(CancelURL,CancelWIDTH,CancelHEIGHT);
	}
}

function resetFieldValue(currentField) {
	document.getElementById(currentField).value = '';
}

function showCalendar(textField, viewField) {
	var width="250", height="290";
	var left = (screen.width/2) - width/2;
	var top = (screen.height/2) - height/2;
	var styleStr = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width='+width+',height='+height+',left='+left+',top='+top+',screenX='+left+',screenY='+top;
	var msgWindow = window.open('../functions/showcalendar.php?textfield='+textField+'&viewfield='+viewField,'showcalendar', styleStr);
}

function emailCheck(emailStr) {
	var checkTLD = 1;
	var knownDomsPat = /^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat = /^(.+)@(.+)$/;
	var specialChars = "\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars = "\[^\\s" + specialChars + "\]";
	var quotedUser = "(\"[^\"]*\")";
	var ipDomainPat = /^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom = validChars + '+';
	var word = "(" + atom + "|" + quotedUser + ")";
	var userPat = new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat = new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray = emailStr.match(emailPat);
	if (matchArray == null) {
		// alert("Email address seems incorrect (check @ and .'s)");
		return false;
	}
	var user = matchArray[1];
	var domain = matchArray[2];
	for (i=0; i < user.length; i++) {
		if (user.charCodeAt(i) > 127) {
			// alert("Ths username contains invalid characters.");
			return false;
   		}
	}
	for (i=0; i < domain.length; i++) {
		if (domain.charCodeAt(i) > 127) {
			// alert("Ths domain name contains invalid characters.");
			return false;
		}
	}
	if (user.match(userPat) == null) {
		// alert("The username doesn't seem to be valid.");
		return false;
	}
	var IPArray = domain.match(ipDomainPat);
	if (IPArray != null) {
		for (var i=1; i <= 4; i++) {
			if (IPArray[i] > 255) {
				// alert("Destination IP address is invalid!");
				return false;
		   }
		}
		return true;
	}
	var atomPat = new RegExp("^" + atom + "$");
	var domArr = domain.split(".");
	var len = domArr.length;
	for (i = 0; i < len; i++) {
		if (domArr[i].search(atomPat) == -1) {
			// alert("The domain name does not seem to be valid.");
			return false;
	   }
	}
	/*
	if (checkTLD && domArr[domArr.length-1].length != 2 && domArr[domArr.length-1].search(knownDomsPat) == -1) {
		// alert("The address must end in a well-known domain or two letter " + "country.");
		return false;
	}
	*/
	if (len < 2) {
		// alert("This address is missing a hostname!");
		return false;
	}
	return true;
}