function navigate(month,year) {

   var url = "calendar_small.php?month="+month+"&year="+year;

   //if(move=="prev")
   //{   var url = "calendar_small.php?month="+(month-1)+"&year="+year;  }
   //else
   //{   var url = "calendar_small.php?month="+(month+1)+"&year="+year;  }

   if(window.XMLHttpRequest) {
           req = new XMLHttpRequest();
   } else if(window.ActiveXObject) {
           req = new ActiveXObject("Microsoft.XMLHTTP");
   }
   req.open("GET", url, true);
   req.onreadystatechange = callback;
   req.send(null);
}

function callback() {        
         obj = document.getElementById("calendar");
         setFade(0);

      if(req.readyState == 4) {
                if(req.status == 200) {
                        response = req.responseText;
                        obj.innerHTML = response;
                        fade(0);
                } else {
                        alert("There was a problem retrieving the data:\n" + req.statusText);
                }
        }
}

function goLastMonth(month, year) 
{ 
   // If the month is January, decrement the year
   if(month == 1) 
   { --year; 
   month = 13; 
   } 
   document.location.href = 'calendar_small.php?month='+(month-1)+'&year='+year; 
} 

function goNextMonth(month, year) 
{ 
   // If the month is December, increment the year 
   if(month == 12) 
   { ++year; 
   month = 0; 
   } 
   document.location.href = 'calendar_small.php?month='+(month+1)+'&year='+year; 
} 

function fade(amt) {
   if(amt <= 100) {
      setFade(amt);
      amt += 10;
      setTimeout("fade("+amt+")", 5);
    }
}

function setFade(amt) {
   obj = document.getElementById("calendar");
   
   amt = (amt == 100)?99.999:amt;
  
   // IE
   obj.style.filter = "alpha(opacity:"+amt+")";
  
   // Safari<1.2, Konqueror
   obj.style.KHTMLOpacity = amt/100;
  
   // Mozilla and Firefox
   obj.style.MozOpacity = amt/100;
  
   // Safari 1.2, newer Firefox and Mozilla, CSS3
   obj.style.opacity = amt/100;
}