var fader = new Array(), fadeQ = new Array();
var RGB = new Array(256), k = 0, hex = ["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"];
for (var i = 0; i < 16; i++) for (var j = 0; j < 16; j++) RGB[k++] = hex[i] + hex[j];

function fadeObj(number, id, colOff, colOn, spdIn, spdOut, def) {
  this.number = number;
  this.id = id;
  this.colOff = [parseInt(colOff.substr(0, 2), 16), parseInt(colOff.substr(2, 2), 16), parseInt(colOff.substr(4, 2), 16)];
  this.colOn = [parseInt(colOn.substr(0, 2), 16), parseInt(colOn.substr(2, 2), 16), parseInt(colOn.substr(4, 2), 16)];
  this.colNow = [parseInt(colOff.substr(0, 2), 16), parseInt(colOff.substr(2, 2), 16), parseInt(colOff.substr(4, 2), 16)];
  this.spdIn = spdIn;
  this.spdOut = spdOut;
  this.def = def;
  this.direction = false;
  this.active = false;
  this.message = new Array();
  this.messageNow = 0;
}

function fadeCmd(number, message, direction) {
  this.number = number;
  this.message = message;
  this.direction = direction;
}

function fade(number, message, direction) {
  if (fader[number].def && fader[number].messageNow == 0 && fader[number].direction) {
    fadeQ[fadeQ.length] = new fadeCmd(number, 0, false);
    fadeQ[fadeQ.length] = new fadeCmd(number, message, direction);
    message = 0;
    direction = false;
  } else fadeQ[fadeQ.length] = new fadeCmd(number, message, direction);
  setTimeout(function() { fadeBegin(number); }, 20);
}

function fadeBegin(number) {
  for (var x = 0; x < fadeQ.length; x++) {
    for (var y = x + 1; y < fadeQ.length; y++) {
      if (fadeQ[x].number == fadeQ[y].number && fadeQ[x].message == fadeQ[y].message && fadeQ[x].direction != fadeQ[y].direction) {
        fadeQ.splice(x, 1);
        fadeQ.splice(y - 1, 1);
      }
    }
  }
  if (!fader[number].active) {
    for (var x = 0; x < fadeQ.length; x++) {
      if (fadeQ[x].number == number && fadeQ[x].direction != fader[number].direction) {
        var del = fadeQ.splice(x, 1);
        setTimeout(function() { fadeEng(number, del[0].message, del[0].direction); }, 0);
        break;
      }
    }
  }
}

function fadeEng(number, message, direction) {
  if (!fader[number].active) {
    fader[number].active = true;
    fader[number].direction = direction;
    fader[number].messageNow = message;
    document.getElementById(fader[number].id).innerHTML = fader[number].message[message];
  }
  var iniCol = (direction) ? fader[number].colOff : fader[number].colOn;
  var endCol = (direction) ? fader[number].colOn : fader[number].colOff;
  var incCol = fader[number].colNow;
  var spd = (direction) ? fader[number].spdIn : fader[number].spdOut;
  for (var x = 0; x < 3; x++) {
    var incr = (endCol[x] - iniCol[x]) / spd;
    incCol[x] = (incr < 0) ? Math.max(incCol[x] + incr, endCol[x]) : Math.min(incCol[x] + incr, endCol[x]);
  }
  document.getElementById(fader[number].id).style.color = "#" + RGB[parseInt(incCol[0])] + RGB[parseInt(incCol[1])] + RGB[parseInt(incCol[2])];
  if (incCol[0] == endCol[0] && incCol[1] == endCol[1] && incCol[2] == endCol[2]) {
    fader[number].active = false;
    for (var x = 0; x < fadeQ.length; x++) {
      if (fadeQ[x].number == number) {
        var del = fadeQ.splice(x, 1);
        setTimeout(function() { fadeEng(number, del[0].message, del[0].direction); }, 0);
        return false;
      }
    }
    if (!direction) {
      if (fader[number].def) {
        setTimeout(function() { fadeEng(number, 0, true); }, 0);
      } else document.getElementById(fader[number].id).innerHTML = "&nbsp;";
    }
  } else setTimeout(function() { fadeEng(number, message, direction); }, 0);
}

function throbFade() {
  fade(2, Math.floor(throbStep / 2), (throbStep % 2) ? false : true);
  setTimeout("throbFade();", (throbStep % 2) ? 100 : 8000);
  if (++throbStep > fader[2].message.length * 2 - 1) throbStep = 0;
}
function AddLinks() 
{
  var ni = document.getElementById('ExtraLinks');
  var numi = document.getElementById('Links');
  var num = (document.getElementById('Links').value );
  numi.value = num*1+1;
  var newdiv = document.createElement('div');
  var divIdName = 'Extra'+num+'Links';
  newdiv.setAttribute('id',divIdName);
  var linkText=1+num*1;
  newdiv.innerHTML = '<p><label for="link'+num+'">Link '+linkText+'</label> http:// <input type="text" name="link'+num+'" id="link'+num+'" size="50" /></p>';
  ni.appendChild(newdiv);
}

function ChangeLink(ElementNumber, RecordID)
{
	var link = document.getElementById('preview'+ElementNumber+'');
	link.href = 'previewnewsletter.php?template='+document.getElementById('template'+ElementNumber+'').value+'&ID='+RecordID+'';
}

function CheckAll(NameFirstPart)
{
	var Counter = 0;
	var Fullname;

	while (Counter < 1000)
	{
		Fullname = NameFirstPart + Counter;
		if (document.getElementById(Fullname) != null)
		{
			document.getElementById(Fullname).checked = true;
		}

		Counter++;
	}
}

/*function ToggleNewsType($element)
{
	if(document.getElementById('$element').style.display == "block")
	{
		document.getElementById('newsletter').style.display = 'block';
		document.getElementById('mailshot').style.display = 'none';
	}

	else
	{
		document.getElementById('newsletter').style.display = 'none';
		document.getElementById('mailshot').style.display = 'block';
	}
}*/

function CheckEmail(fieldname) 
{
	var email = document.getElementById(fieldname).value
	var AtPos = email.indexOf("@")
	var StopPos = email.lastIndexOf(".")

	if (AtPos == -1 || StopPos == -1) 
	{
		alert("Please enter a valid email address");
		return false;
	}

	else
	{
		return true;
	}
}

function ValidateNewsItem()
{
	var message = "";
	var returnvalue = true;

	if(document.newsitem.title.value == "")
	{
		message = message + "You must enter a title \n";
		returnvalue = false;
	}
	
	if(document.newsitem.content.value == "")
	{
		message = message + "You must enter some content \n";
		returnvalue = false;
	}

	if(returnvalue == false)
	{
		alert(message);
	}

	return returnvalue;
}

function CheckSendNewsletter()
{
	var message = "";
	var returnvalue = true;

	if(document.sendletter.subject.value == "")
	{
		message = message + "Please enter a email subject \n";
		returnvalue = false;
	}

	if(returnvalue == false)
	{
		alert(message);
	}

	return returnvalue;
}

function ToggleNewsLetter()
{
	document.getElementById('newsletterholder').style.display = 'block';
	document.getElementById('mailshot').style.display = 'none';
}

function ToggleMailshot()
{
	document.getElementById('newsletterholder').style.display = 'none';
	document.getElementById('mailshot').style.display = 'block';
}