//
//                   Calendario vers. 1.0
//                     by Maurizio Mauri
//                   mailto: M.Mauri@mclink.it
//
//   

var source;
var tipo;
var campi = new Array();

	function TrovaXY(Pos)
	{
	var dB=document.body;var eL=0;var eT=0;
	for(var p=Pos;p&&p.tagName!='BODY';p=p.offsetParent){	eL+=p.offsetLeft;eT+=p.offsetTop;}
	var eH=Pos.offsetHeight;var dH=Pos.style.pixelHeight;var sT=dB.scrollTop;
	if(eT-dH>=sT&&eT+eH+dH>dB.clientHeight+sT)eT-=dH;else eT+=eH;
	Ritorno = new Array()
	Ritorno[0]=eL
	Ritorno[1]=eT
	return Ritorno

	} 	
	
function MostraCalendario(val1, val, start, e, t) {
	var dt = new Array();
	var oggi = new Date();
	Posi = TrovaXY(e);
	xPos=Posi[0];
	yPos=Posi[1];				
	tipo = t;
	source = val;
	source1 = val1;
		//if (t == 0) {
	//	dt[0] = val[0].value;
	//	dt[1] = val[1].value;
	//	dt[2] = val[2].value;
	//}
//else

  if (val.value == "")
  			{
		dt[0] = oggi.getDate();
		dt[1] = oggi.getMonth() + 1 ;
		dt[2] = oggi.getFullYear();
			}
  else	dt = val.value.split('/');
	
  dBock = start.split('/');
  showCalendar(new Date(dt[2], dt[1] - 1, dt[0]), new Date(dBock[2], dBock[1] - 1, dBock[0]), xPos, yPos);
}
			
			
var xwidth = 220;
var xheight = 180;
var browser = document.layers ? 0 : document.all ? 1 : 2;


// colori
var backtable = '#ffffff';
var calendback = '#F5F5F5';
var lines = '#ffffff';
var bright = '#ffffff';
var festa = '#DADADA';
var oggi = '#DADADA';
var dataPrec = '#ffffff';

// ------ Non cambiare ----------
var mesi = new Array('Gennaio', 'Febbraio', 'Marzo', 'Aprile', 'Maggio', 'Giugno',
               'Luglio', 'Agosto', 'Settembre', 'Ottobre', 'Novembre', 'Dicembre');

var days = new Array('Lu', 'Ma', 'Me', 'Gi', 'Ve', 'Sa', 'Do');
var dd = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

var today = new Date();
var canno = today.getFullYear();
var cmese = today.getMonth();
var ccurrday = today.getDate();
var DataStartBlock = new Date();
var cellwidth = Math.floor(xwidth / 7);
xwidth = cellwidth * 7;
var xmese = 0;
var aboutx = false;
var isOn = false;

function chiudi()
		{
		 getId().showIt(false);
		}

function action(g, m , a) {
   function format(x) {
      return x > 9 ? x : "0" + x;
   }
   getId().showIt(false);

   if (tipo == 0) {
      source[0].value = format(g);
      source[1].value = format(m + 1);
      source[2].value = a;
   }
   else
      source.value = format(g) + '/' + format(m + 1) + '/' + a;
      source1.value = a + '-' + format(m + 1) + '-' + format(g);
}

document.write('<style type="text/css">\n<!--');
document.write('.cal { font-family: Verdana, Arial, Helvetica; font-size: 10px; font-weight: bold; color: #333333;}');
document.write('.num { font-family: Verdana, Arial, Helvetica; font-size: 12px; text-decoration:none}');
document.write('.mese {  font-family: Verdana, Arial, Helvetica; font-size: 14px; font-weight: bold; background-color: #FFFFFF; color: #333333;}');
document.write('.butt {  font-family: Verdana, Arial, Helvetica; font-size: 10px}');
document.write('-->\n</style>');


function comparedate(d1, d2) {
   if (d1.getFullYear() == d2.getFullYear() && d1.getMonth() == d2.getMonth() && d1.getDate() == d2.getDate()) 
      return true;
   return false;
}

function pasqua(aa) {
   var xx = new Array(22, 22, 23, 23, 24, 24);
   var yy = new Array(2, 2, 3, 4, 5, 5);
   var a = aa % 19;
   var b = aa % 4;
   var c = aa % 7;

   var i = Math.floor(aa / 100) - 15;
   var x = xx[i], y = yy[i];
   var d = (19*a + x) % 30;
   var e = (2*b + 4*c + 6 * d + y) % 7;

   var p = 22 + d + e;

   var m = 300;
   if (p > 31) {
      m = 400;
      p = p - 31;
   }
   return m + p;
}


function isfesta(d) {
   var feste = new Array(0, 101, 106, 425, 501, 602, 815, 1101, 1208, 1225, 1226);

   if (d.getDay() == 0)
      return true;

   var pp = pasqua(d.getFullYear()) + 1;     // Pasquetta
      if (pp % 100 > 31)
         pp = 401;

   feste[0] = pp;
   for (var i = 0; i < feste.length; i++)
      if (Math.floor(feste[i] / 100) == d.getMonth() + 1) {
         var gg = feste[i] % 100;
         if (gg == d.getDate())
            return true;
      }

   return false;
}


function calendar(currday, mese, anno, dateClick) {
   var DataSelezionata = new Date(anno, mese, 1);
   var dx = 2 - (new Date(anno, mese, 1)).getDay();
   if (dx == 2)
      dx = -5;
   var daysInMonth = dd[mese];

   if (mese == 1) {
      if (anno % 4 == 0 && anno % 100 != 0  || anno % 400 == 0)
         daysInMonth++
   }

   var tx = '<div class="tit_eventi">&nbsp;&nbsp;' + mesi[mese] + ' ' + anno +'</div>\n';
   tx += '<table width="' + xwidth + '" border="0" cellspacing="1" cellpadding="1" >\n';
   tx += '<tr align="right">\n';

   for (var i = 0; i < 7; i++)
      tx += '<td width="' + cellwidth+ '" class="sottotit_eventi" bgcolor="#E8E6F6"><b>' + days[i] + '</b>&nbsp;</td>\n';

   tx += '</tr>\n';
   for (var j = 0; j < 6; j++) {
      tx += '<tr bgcolor="' + calendback + '" align="right">\n';
      for (var i = 0; i < 7; i++) {
         var bgstring = "";
         var fgcol = lines;
         var fgstring = '&nbsp;';

         if (dx > 0 && dx <= daysInMonth) {
           
             fgstring = dx;
            
            var ddx = new Date(anno, mese, dx);
            if (isfesta(ddx)) {
               bgstring = ' bgcolor="' + festa + '"';
            }
            if (ddx.getDate() == currday && ddx.getMonth() == mese && ddx.getFullYear() == anno  )
            { 
			   fgcol = '#ff0000';
               fgstring = '<b><u>' + dx + '</u></b>\n'; 
            }
            if (comparedate(ddx, today)) {
               fgcol = bright;
               fgstring = '<font  class="tit_eventi" style="font-size:11px;">' +dx + '</font>\n'; 
             
            }
            var tempdate = ddx.getDate() + ", " + ddx.getMonth() + ", " + ddx.getFullYear();
       
            //ANNO ATTUALE o Di Blocco
            annoc = dateClick.getFullYear();
            //MESE ATTUALE o Di Blocco
            mesec = dateClick.getMonth();
            mesec = mesec.toString()
            if (mesec.length < 2) mesec = '0' + mesec;	
			//GIORNO ATTUALE
            currdayc = dateClick.getDate();
            currdayc = currdayc.toString()
            if (currdayc.length < 2) currdayc = '0' + currdayc;
            
            //ANNO CALENDARIO
            annocal = ddx.getFullYear();
            //MESE CALENDARIO
            mesecal = ddx.getMonth();
            mesecal = mesecal.toString()
            if (mesecal.length < 2) mesecal = '0' + mesecal;	
			//GIORNO CALENDARIO
            currdaycal = ddx.getDate();
            currdaycal = currdaycal.toString()
            if (currdaycal.length < 2) currdaycal = '0' + currdaycal;            

            dataOggi = annoc + '' + mesec + '' + currdayc;
            dataCal =  annocal + '' + mesecal + '' + currdaycal;
           
		    if (dataOggi > dataCal )
            {
            	fgstring = '<i><a class = "testo_medio"><font class = "testo_medio">' + fgstring +  '</font></a></i>\n';
            }
            else
            {
            	fgstring = '<a href="javascript:action(' + tempdate + ')" class = "testo_medio"><font class = "testo_medio">' + fgstring + '</font></a>\n';
            }
            
             //alert("Data:" + dataOggi + '\n' + "Data:" + dataCal);
         }

         tx += '<td  width="' + cellwidth + '" class="testo_medio"' + bgstring + '>\n';
         tx += fgstring;
         tx += '</td>\n';
         dx++;
      }
      tx += '</tr>\n';
   }
   tx += '</table>\n';

   return tx;
}


function dataframe(x) {
   var s = '<table width="' + xwidth + '" border="1" cellspacing="0" cellpadding="0" bgcolor="' + backtable + '">';
   s += '<tr>\n<td class="tit_eventi" valign="middle">';

   s += x; // calendar(currday, mese, anno);
   
   s += '</td></tr><tr><td>';
   s += '<form class="butt"><table width="100%" border="0" cellspacing="0" cellpadding="2">';
   s += '<tr>';
   s += '<td><a href="#" onclick="chiudi(); return false;" class = "pulsanti">Annulla</a></td>';
   s += '<td align="right">';
   s +='<a href="##" onclick="altro_mese(-1)" title="Mese precedente"><img alt="Mese precedente" border="0" src="../Calendario/prev.gif" name="prev" ></a>';
   s += '<a href="##" onclick="altro_mese(900)" title="Data odierna"><img alt="Data odierna" border="0" name="current" src="../img/icone/calendario.gif" ></a>';
   s += '<a href="##" onclick="altro_mese(1)" title="Mese successivo"><img alt="Mese successivo" src="../Calendario/next.gif" border="0" name="next"></a></td>';
   s += '</tr></form></table>';

   s += '</td>\n</tr>\n</table>';
   return s;
}


function altro_mese(x) {
  xmese += x; 
  
   if (x==900)
  {
  xmese = today.getMonth() - mese;
  }
 
   if (x == 9)
      xmese = 0;
 
   var xday = (xmese == 0)? currday : 99;
   var mm = (mese + xmese) % 12;

   while (mm < 0)
      mm += 12;
  
   
   var s = dataframe(calendar(xday, mm, anno + Math.floor((mese + xmese) / 12), DataStartBlock ));
  
   writeLayer(s);
    
	
  aboutx = false;
}


function xabout() {
   if (aboutx)
      altro_mese(0);
   else {
      var aboutstr = '<table border="0" cellspacing="0" cellpadding="10" align="center"><tr><td nowrap class="mese">';
      aboutstr += '<br>Calendario vers. 1.0<br><br>';
      aboutstr += '&copy;2002 by Maurizio Mauri<br><br>';
      aboutstr += '<a href="mailto:M.Mauri@mclink.it" class="num">M.Mauri@mclink.it</a>';
      aboutstr += '</td></tr></table><br>';
   
      writeLayer(dataframe(aboutstr));
   }
   aboutx = true;
}


function getId() {
   switch (browser) {
      case 0:
         return document.layers.calframe;
      case 1:
         return eval('calframe');
      case 2:
         return document.getElementById("calframe");
   }
}


function moveLayer(xPos, yPos) {
   switch (browser) {
   case 0:
      this.left = xPos;
      this.top = yPos;
      break;
   case 1:
      this.style.pixelLeft = xPos;
      this.style.pixelTop = yPos;
     break;
   default:
      this.style.left = xPos;
      this.style.top = yPos;
   }
}


function createlayer() {
   var s;
  if (document.layers)
      s = '<layer id="calframe" visibility="hide" z-index=1;>';
   else
      s = '<div id="calframe" style="position:Absolute; visibility: hidden; z-index=10;"  >';
   if (document.layers)
      s += '</layer>';
   else
      s += '</div>';

   document.writeln(s);
}


function showIt(on) {
   isOn = on;
   if (browser)
      this.style.visibility = (on) ? "visible" : "hidden";
   else
      this.visibility = (on) ? "show" : "hide"
}


function writeLayer(s) {
   var id = getId();
   if (browser)
      id.innerHTML = s;
   else {
      id.document.open();
      id.document.write(s);
      id.document.close();
   }
}

function init() {
   var id = getId();
   id.moveLayer = moveLayer;
   id.showIt = showIt;
   id.showIt(false);
}


function showCalendar(d, startBlock, xpos, ypos) {
   if (!isOn) {
           
      if (d) {
            anno = d.getFullYear();
            mese = d.getMonth();
            currday = d.getDate();
         } else {
            anno = today.getFullYear();
            mese = today.getMonth();
            currday = today.getDate();
      }
	  
	  if (startBlock)
	  			{
				 DataStartBlock = startBlock;
				}
	  
	//alert(startBlock)
      if (arguments.length > 2) {
         var id = getId();
         id.moveLayer(xpos, ypos);
      }
      else
         getId().moveLayer(100, 100);

      xmese = 0;

      writeLayer(dataframe(calendar(currday, mese, anno, DataStartBlock)));
      
   }
   getId().showIt(!isOn);
}



createlayer(1);
onload = init;