function swapImageOver(img) {
     img.src = "../img/struttura/freccette-on.gif";
}

function swapImageOut(img) {
     img.src = "../img/struttura/freccette-off.gif";
}

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

function MM_validateForm() { //v4.0
  
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  
  for (i=0; i<(args.length-2); i+=3) { 
  		
		test=args[i+2]; 
		val=MM_findObj(args[i]);
    
		if (val) { 
			nm=val.name; 
			if ((val=trim(val.value))!="") {
      			if (test.indexOf('isEmail')!=-1) { 
					p=val.indexOf('@');
        			if (p<1 || p==(val.length-1)) 
						errors+='- '+nm+', inserire un indirizzo valido.\n';
      			} else if (test!='R') { 
					num = parseFloat(val);
        			if (isNaN(val)) 
						errors+='- '+nm+', inserire un numero valido.\n';
        			if (test.indexOf('inRange') != -1) { 
						p=test.indexOf(':');
          				min=test.substring(8,p); 
						max=test.substring(p+1);
          				if (num<min || max<num) 
							errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    				} 
				} 
		} else if (test.charAt(0) == 'R') 
			errors += '- '+nm+' è un campo necessario.\n'; 
		}
  
  } 
  
  if (errors) 
  	alert('Ci sono i seguenti errori:\n'+errors);
  document.MM_returnValue = (errors == '');

}


function trim(stringa)
{
while (stringa.substring(0,1) == ' ')
{
stringa = stringa.substring(1, stringa.length);
}
while (stringa.substring(stringa.length-1, stringa.length) == ' ')
{
stringa = stringa.substring(0,stringa.length-1);
}
return stringa;
}