function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
return new XMLHttpRequest();
}
if (window.ActiveXObject)
{
// code for IE6, IE5
return new ActiveXObject("Microsoft.XMLHTTP");
}
return null;
}


function videoSwitchPage(param)
{

xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Your browser does not support XMLHTTP!");
return;
}
var url="ajax/video_thumbs.php";
url=url+"?page="+param;
$('video_switchblank').style.display = 'block';
xmlhttp.onreadystatechange=videoReturn;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function videoSwitchPage_pilot(param)
{

xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Your browser does not support XMLHTTP!");
return;
}
var url="ajax/video_thumbs_pilot.php";
url=url+"?page="+param;
$('video_switchblank').style.display = 'block';
xmlhttp.onreadystatechange=videoReturn;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function videoReturn()
{
if (xmlhttp.readyState==4)
{
$('video_return').innerHTML = xmlhttp.responseText;
}
}

function showComment() {
	$('add_videocomment').style.display = 'block';
	$('comm_insert').style.display = 'none';
	$('subvideo_line2').style.display = 'none';
}	

function remainingText() {
	var leng=$('comment_text').value.length;
	if (leng >= 499) {
		$('comment_text').value = ($('comment_text').value).substring(0,499);
		$('remaining_text').innerHTML = 'Nessun carattere rimanente!';
	}else{
		$('remaining_text').innerHTML = 499-leng+' caratteri rimanenti';
	}
}

function sendComment(target) {
	var text=$('comment_text').value;
	var v=$('videoid').value;
	if (text.length>0) {
	xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	{
	alert ("Your browser does not support XMLHTTP!");
	return;
	}
	if (target==0) {
	var url="ajax/send_comment.php";
	}else if (target==1){
	var url="ajax/send_comment_prj.php";
	}else if (target==2){
	var url="ajax/send_comment_rias.php";
	}
	url=url+"?t="+escape(text)+'&i='+v;
	$('add_videocomment').innerHTML = '<strong>Invio del commento...</strong>';
	$('add_videocomment').style.backgroundColor= '#feffc5';
	//$('comment_response').innerHTML = '&nbsp;';
	xmlhttp.onreadystatechange=commentReturn;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
	
}else{
	alert('Devi inserire un testo per il commento.');
}
	
}

function commentReturn() {
	if (xmlhttp.readyState==4)
	{
	$('add_videocomment').innerHTML = xmlhttp.responseText;
	$('add_videocomment').style.backgroundColor= '#c5ffca';
	}
}