var fade;

function openQuestion( h )
{
	h+=10;
	setOpacity('question', 0.85);
	document.getElementById('question').style.display="inline";
	document.getElementById('question').style.height=h+"px";
	if (h<254)
		setTimeout("openQuestion("+h+");", 50);
	else	
		document.getElementById('questionForm').getElementsByTagName('input')[0].focus();
} 

function closeQuestion()
{
	//document.getElementById('question').style.display="none";
	page('/content/pitanje_session.php', 'invisible');
	fading('question', 0.85, 20, -0.05);
} 

function setOpacity ( elem, op )
{
	document.getElementById(elem).style.opacity = op;
  document.getElementById(elem).style.MozOpacity = op;
  document.getElementById(elem).style.KhtmlOpacity = op;
  document.getElementById(elem).style.filter = "alpha(opacity=" + (op*100) + ")";
}

function fading ( elem, op, speed, direction )
{
	op = op + direction;
	setOpacity(elem, op);
	clearTimeout(fade);
	if ( direction > 0 && op < 1 )
	{
		document.getElementById(elem).style.display = "inline";
		fade = setTimeout("fading('"+elem+"', "+op+", "+speed+", "+direction+");", speed);
	}
	else if ( direction < 0 && op > 0 )
	{
		document.getElementById(elem).style.display = "inline";
		fade = setTimeout("fading('"+elem+"', "+op+", "+speed+", "+direction+");", speed);
	}
	else if ( direction < 0 && op <= 0)
		document.getElementById(elem).style.display = "none";
}

function redirect ( url )
{
	window.location=url;
} 

function checkQuestionForm()
{
	var email = document.getElementById('questionForm').getElementsByTagName('input')[0];
	var message = document.getElementById('questionForm').getElementsByTagName('textarea')[0];
	if (email.value=="")
	{
		alert("Molimo Vas da upišete svoj email kako bismo Vam mogli odgovoriti.");
		email.focus();
		return false;
	} 
	if (message.value.length<10)
	{
		alert("Molimo Vas da upišete pitanje.");
		message.focus();
		return false;
	} 
} 

// otvaranje stranice u div-u
function page(url, containerid, delay){
var page_request = false

if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
page_request.open('GET', url, true)
page_request.send(null)

}


function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
{
	document.getElementById(containerid).innerHTML=page_request.responseText;
}
else
	document.getElementById(containerid).innerHTML="";
document.getElementById(containerid).focus();

}