var notesShowing = "blankNotes";
var myImg = 0;
function nextImg()
	{
	myImg = myImg + 1;
	switch (myImg) {
		case 1:
			document.getElementById("pix").src = "/images/orpheus.png";
			break;
		case 2:
			document.getElementById("pix").src = "/images/amos-performing-in-berlin.jpg";		
			break;
		case 3:
			document.getElementById("pix").src = "/images/photo.jpg";
			break;
		case 4:
			document.getElementById("pix").src = "/images/videoThumb-lies1.jpg";
			break;
		default:
			document.getElementById("pix").src = "/images/amoselkana.jpg";
			myImg = 0;
		}
	}
	
function showNotes(notesDiv,type)
	{
	document.getElementById(notesShowing).style.display="none";
	document.getElementById(notesDiv).style.display="block";
	switch (type)	{
		case 'm':
			document.getElementById(notesDiv).style.border="3px solid yellow";
			break;
		case 'i':
			document.getElementById(notesDiv).style.border="3px solid #00ff33";
			break;
		case 'c':
			document.getElementById(notesDiv).style.border="3px solid red";
			break;			
		default:
			document.getElementById(notesDiv).style.border="3px solid white";
	}
	notesShowing = notesDiv;
	/*onclicking something hide any message :*/
	if (document.getElementById('msg'))
		{
		document.getElementById('msg').style.display="none";
		}
	}

function hideNotes(notesDiv)
	{
	document.getElementById(notesShowing).style.display="none";
	notesShowing = "blankNotes";
	/*onclicking something hide any message :*/
	if (document.getElementById('msg'))
		{
		document.getElementById('msg').style.display="none";
		}
	}
function donate()
	{
	if (document.getElementById('donate').style.display=="none")
		{
		document.getElementById('donate').style.display="block";
		}
		else
		{
		document.getElementById('donate').style.display="none";		
		}
	}
	
function checkGuestForm()
	{
	guestName = trim(document.getElementById('guestName').value);
	if (guestName == null || guestName == "")
		{
		alert("Please type your name");
		document.getElementById('guestName').focus();
		return false;
		}
	else
		{
		guestMessage = trim(document.getElementById('guestMessage').value);
		if (guestMessage == null || guestMessage == "")
			{
			alert("Please type your message");
			document.getElementById('guestMessage').focus();
			return false;
			}
		else
			{
			document.getElementById('addGuestDiv').style.display = 'none';
			return true;
			}
		}
	}
function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}
function checkMailForm()
	{
	senderName = trim(document.getElementById('FromName').value);
	if (senderName == null || senderName == "")
		{
		alert("Please type your name");
		document.getElementById('FromName').focus();
		return false;
		}
	else
		{
		senderMail = trim(document.getElementById('From').value);
		apos = senderMail.indexOf("@");
		dotpos = senderMail.lastIndexOf(".");
		if (apos < 1 || dotpos - apos < 2)
			{
			alert("Please type a correct email address");
			document.getElementById('From').focus();
			return false;
			}
		else
			{
			theSubject = trim(document.getElementById('Subject').value);
			if (theSubject == null || theSubject == "")
				{
				alert("Please type your subject");
				document.getElementById('Subject').focus();
				return false;
				}
			else
				{
				theBody = trim(document.getElementById('Body').value);
				if (theBody == null || theBody == "")
					{
					alert("Please type your message");
					document.getElementById('Body').focus();
					return false;
					}
				else
					{
					return true;
					}
				}
			}
		}
	}
function checkLinkForm()
	{
	guestName = trim(document.getElementById('linkName').value);
	if (guestName == null || guestName == "")
		{
		alert("Please type your name");
		document.getElementById('linkName').focus();
		return false;
		}
	//url = isUrl(document.getElementById('url').value);
	if (!isUrl(document.getElementById('linkUrl').value))
		{
		alert("Please type a valid url. For example: http://www.amoselkana.com");
		document.getElementById('linkUrl').focus();
		return false;
		}
	note = trim(document.getElementById('linkNote').value);
	if (note == null || note == "")
		{
		alert("Please type your note");
		document.getElementById('linkNote').focus();
		return false;
		}
	document.getElementById('addLinkDiv').style.display = 'none';
	return true;
	}
function isUrl(s) {
	var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
	return regexp.test(s);
}
function swapImage(imgId,imgName)
	{
	imgString = 'images/' + imgName
	document.getElementById(imgId).src = imgString
	}
function changeTextColor(colorName)
{
	document.getElementById('container').style.color = colorName;
 	if(colorName=='black')	{
 		var aArray = document.getElementsByTagName("a");
        	for (var i = 0; i < aArray.length; i++) { 
        		aArray[i].style.color = '#000066';
        	}
        }
        else	{
        	var aArray = document.getElementsByTagName("a");
        	for (var i = 0; i < aArray.length; i++) { 
        		aArray[i].style.color = '#99ffff';
        	}
        }
}