var req;

function navigate(month,year) {
        var url = "calendar.php?month="+month+"&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 callstep2(indate,month,year) 
{
        var url = "calendar.php?indate="+indate+"&month="+month+"&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 callstep3(indate,month,year,intime) 
{
        var url = "calendar.php?indate="+indate+"&intime="+intime+"&year="+year+"&month="+month;
        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 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;
}

function checkFields()
{
	if(document.lastform.nev.value!='' && document.lastform.lakcim.value!='' && document.lastform.telefon.value!='' )
	{
		 document.getElementById('submit_div').style.display = 'block';
	}
}

function deleteContact(indate,month,year,deletetime)
{
	var url = "calendar.php?indate="+indate+"&month="+month+"&year="+year+'&deletetime='+deletetime;
        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 confirmation(indate,month,year,intime) 
{
	var answer = confirm("Biztosan torli?")
	if (answer)
	{
		window.deleteContact(indate,month,year,intime);
	}
	else
	{
		return false;
	}
}