// -------------------------------------------------------
// utile per evitare lo spam...
// -------------------------------------------------------
function mailto(subject, body){
location.href='mailto:?subject='+subject + '&body=' + body; 
}


// -------------------------------------------------------
// funzioni per aumento/mininuzione die font
// -------------------------------------------------------
var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }   
}


// -------------------------------------------------------
// funzione onclick per immagini in galleria fotografica interna alle schede
// -------------------------------------------------------
function showPic (whichpic) 
{ 
   if (document.getElementById) 
   { 
      document.getElementById('placeholder').src = whichpic.href; 
      if (whichpic.title) 
      { 
        document.getElementById('main_img').childNodes[0].nodeValue = whichpic.title; 
      } 
      else 
      { 
        document.getElementById('main_img').childNodes[0].nodeValue = whichpic.childNodes[0].nodeValue; 
      } 
      return false; 
   } 
   else 
   { 
      return true; 
   } 
}

// -------------------------------------------------------
// apertura pagina di edit delle schede
// -------------------------------------------------------
function EditSk(page)
{
  var wnd = window.opener;
  
  if ( (wnd != null) && (!wnd.closed) )
  {
    wnd.focus();
    wnd.location.href = page;
  }  
  else
    OpenWindow(page, 'EditSk', 700, 500);
}



// -------------------------------------------------------
// permette di digitare solo numeri
// -------------------------------------------------------
function numbersonly(myfield, e, dec)
{
  var key;
  var keychar;
  
  if (window.event)
     key = window.event.keyCode;
  else if (e)
     key = e.which;
  else
     return true;
  keychar = String.fromCharCode(key);
  
  // control keys
  if ((key==null) || (key==0) || (key==8) || 
      (key==9) || (key==13) || (key==27) )
     return true;
  
  // numbers
  else if ((("0123456789").indexOf(keychar) > -1))
     return true;
  
  // decimal point jump
  else if (dec && (keychar == "."))
     {
     myfield.form.elements[dec].focus();
     return false;
     }
  else
     return false;
}

// -------------------------------------------------------
// permette di digitare solo numeri e lettere
// -------------------------------------------------------
function letternumber(e)
{
  var key;
  var keychar;
  
  if (window.event)
     key = window.event.keyCode;
  else if (e)
     key = e.which;
  else
     return true;
  keychar = String.fromCharCode(key);
  keychar = keychar.toLowerCase();
  
  // control keys
  if ((key==null) || (key==0) || (key==8) || 
      (key==9) || (key==13) || (key==27) )
     return true;
  
  // alphas and numbers
  else if (((" '.-abcdefghijklmnopqrstuvwxyz0123456789àèìòù?_,éç&âäèêëöüçß&()@").indexOf(keychar) > -1))
     return true;
  else
     return false;
}

// -------------------------------------------------------
// classica openWindow
// -------------------------------------------------------
function OpenWindow(url, windowName, w, h)
{
   var wf = "";
   wf = wf + "width=" + w;
   wf = wf + ",height=" + h;
   wf = wf + ",resizable=yes";
   wf = wf + ",scrollbars=yes";
   wf = wf + ",menubar=no";
   wf = wf + ",toolbar=no";
   wf = wf + ",directories=no";
   wf = wf + ",location=no";
   wf = wf + ",status=yes";
   var wnd = window.open(url,windowName,wf);
   wnd.focus();
}


// -------------------------------------------------------
// si muove tra le pagine del navigatore
// -------------------------------------------------------
function ChangeOffset(NewOffset) {
  document.getElementById("mainForm").last_record.value = NewOffset;
  document.getElementById("mainForm").submit();
}