var ms=navigator.appVersion.indexOf("MSIE");
var ie4=(ms>0)&&(parseInt(navigator.appVersion.substring(ms+5,ms+6))>=4);


function win_open(cmd, tit, dx, dy)
{
   options = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizeable=1,width=" + dx + ",height=" + dy;
   nwin=window.open(cmd , tit, options);
   nwin.focus();
}

function win_query(cmd, tit, field, query)
{
   window.open(cmd + "?field=" + field + "&query=" + query, tit, "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizeable=1,width=800,height=200");
}

function pos_opt(name1, name2, len)
{
   var index = 0;
   for (i = 0; i < len; i++)
   {
      if (name1.options[i].value == name2)
         index = i;
      name1.selectedIndex = index;
   }
}

function fill_radio(length, name, val)
{
   var punt = -1;
   for (i = 0; i < length; i++)
   {
      if (name[i].value == val)
         punt = i;
   }
   if(punt != -1)
      name[punt].checked = true;
   else
      for (i = 0; i < length; i++)
         name[i].checked = false;
}

function pos(ob)
{
   document.forms[0].scroll.value = ob.value;
   document.forms[0].seek.value = document.forms[1].dseek.value;
   document.forms[0].submit();
}

function selectall(p)
{
   var i = 0;
   var f = document.forms[0];
   while(f.elements[i])
   {  
      if(p == 2)
      {
         if(f.elements[i].checked)
	    f.elements[i].checked = false;
         else
	    f.elements[i].checked = true;
      }  
      else
      {
         if(p == 1)
            f.elements[i].checked = true;  
         else
            f.elements[i].checked = false;  
      } 
      i ++;
   }  
}

function isblank(s)
{
   var c, i;
   for (i = 0, c = s.charAt(i); i < s.length; i++)
      if ((c != ' ') && (c != '\n') && (c != '\t')) return 0;
   return 1;
}

function chk_time(h, m, s)
{
   h.value = hn = parseInt(isblank(h.value) ? "0" : h.value, 10);
   m.value = mn = parseInt(isblank(m.value) ? "0" : m.value, 10);
   s.value = sn = parseInt(isblank(s.value) ? "0" : s.value, 10);
   if ((hn < 0) || (hn > 23))
   {
      alert('wrong hour');
      h.value = '';
      h.focus();
   }
   if ((mn < 0) || (mn > 59))
   {
      alert('wrong minutes');
      m.value = '';
      m.focus();
   }
   if ((sn < 0) || (sn > 59))
   {
      alert('wrong seconds');
      s.value = '';
      s.focus();
   }
   return 0;
}

function chk_date(d, m, y)
{
   var n;
   var dd = new Array(00,31,28,31,30,31,30,31,31,30,31,30,31);
   d.value = dn = parseInt(isblank(d.value) ? "1" : d.value, 10);
   m.value = mn = parseInt(isblank(m.value) ? "1" : m.value, 10);
   y.value = yn = parseInt(isblank(y.value) ? "1900" : y.value, 10);
   if ((yn >= 1900) && (yn <= 2037))
   {
      if ((mn >= 1) && (mn <= 12))
      {
         n = parseInt(dd[mn], 10);
         if ((mn == 2) && ((yn % 4) == 0)) n++;
         if ((mn == 2) && (!(yn % 100) || !(yn % 400))) n--;
         if ((dn >= 1) && (dn <= n)) return 0;
         else
	 {
	    alert('wrong day');
            d.value = '';
	    d.focus();
	 }
      }
      else
      {
         alert('wrong month');
         m.value = '';
	 m.focus();
      }
   }
   else
   {
      alert('wrong year');
      y.value = '';
      y.focus();
   }
}
function arrotonda(numero, dec){
   moltip = Math.pow(10,dec);
   numero *= moltip;
   numero = Math.round(numero);
   numero /= moltip;
   return numero;
}

function CheckLength(txta,chrs,maxchars)
{
   with (document.modulo)
   {
      var chars=txta.value
      if (chars.length > maxchars)
         {
         txta.value=chars.substr(0,maxchars);
         txta.blur();
         }
      chrs.value=maxchars-txta.value.length;
   }
}

function preferiti() {
 if (navigator.appName=="Microsoft Internet Explorer") {
   window.external.AddFavorite("http://www.chooseby.com","chooseby");
 } else alert("Su Netscape Navigator  sufficiente premere contemporaneamente CTRL+D per aggiungere la pagina a propri segnalibri.")
}

function iniziale() {
 if (document.all) {
   document.body.style.behavior = 'URL(#default#homepage)';
  document.body.setHomePage("http://www.chooseby.com");
  } else { alert("Funzione abilitata solo per IE4 o superiore")
  } return false;
 }


function wind(e,name){

   if (ie4>0){
      eval("document.all." + name + ".style.left=(event.clientX);");
      eval("document.all." + name + ".style.top=(event.clientY+document.body.scrollTop);");
      eval("document.all." + name + ".style.visibility='visible';");
   }
   else{
      eval("document.getElementById('" + name + "').style.left=e.pageX;");
      eval("document.getElementById('" + name + "').style.top=e.pageY;");
      eval("document.getElementById('" + name + "').style.visibility='visible'");
   }
}

function windOFF(e,name){

   if (ie4>0){
      eval("document.all." + name + ".style.visibility='hidden';");
   }
   else{
      eval("document.getElementById('" + name + "').style.visibility='hidden'");
   }
}