function xmlRequest(){
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }	
}

function getPrevDate( day, month, year, date ){
	xmlRequest();
	var prevMonth = month - 1;
	if( prevMonth == 0 )
	{
		year = year - 1;
		prevMonth = 12;
	}
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?month=" + prevMonth + "&year=" + year + "&date=" + date,true);
xmlhttp.send();
	
}
function getNextDate( day, month, year, date ){
	xmlRequest();
	var nxtMonth = month + 1;
	if( nxtMonth == 13 )
	{
		year = year + 1;
		nxtMonth = 1;
	}
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?month=" + nxtMonth + "&year=" + year + "&date=" + date,true);
xmlhttp.send();
	
}
function changeBydate( date, month, year )
{
	xmlRequest();
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?month=" + month + "&year=" + year + "&date=" + date,true);
xmlhttp.send();
}
function changeByMonth( month )
{
	xmlRequest();
	date = document.getElementById('date').value;
	year = document.getElementById('year').value;
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?month=" + month + "&year=" + year + "&date=" + date,true);
xmlhttp.send();
}
function changeByYear( year )
{
	xmlRequest();
	date = document.getElementById('date').value;
	month = document.getElementById('month').value;
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?month=" + month + "&year=" + year + "&date=" + date,true);
xmlhttp.send();
}
function getToday()
{
	xmlRequest();
	xmlhttp.onreadystatechange=function()
  	{
  		if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
   		document.getElementById("calender").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","includes/datefinder.php?today=yes",true);
xmlhttp.send();
}