var msgBoxDummyBoxContent = '<table id="alertbox2" cellpadding="0" cellspacing="0" border="0">' +
							'<tr>' +
							'<td class="tlc">&nbsp;</td>' +
							'<td class="tl" id="messageboxtitle">Namn och ikon här&nbsp;</td>' +
							'<td class="trc">&nbsp;</td>' +
							'</tr>' +
							'<tr>' +
							'<td class="ll">&nbsp;</td>' +
							'<td class="content" id="messageboxcontent"></td>' +
							'<td class="rl">&nbsp;</td>' +
							'</tr>' +
							'<tr>' +
							'<td class="blc">&nbsp;</td>' +
							'<td class="bl">&nbsp;</td>' +
							'<td class="brc">&nbsp;</td>' +
							'</tr>' +
							'</table>';

MessageBoxOptions = {
	NOSHADE : 1,
	PERSISTANT : 2,
	NOBLUR : 4, 
	FULLSCREEN : 8
}

MessageBoxButtons = {
	OK : 1,
	YES : 2,
	NO : 4,
	CANCEL : 8,
	CLOSE : 16,
	PREVIEW : 32,
	NOIMG : 64
}

DialogResult = {
	OK : 1,
	YES : 2,
	NO : 4,
	CANCEL : 8,
	CLOSE : 16,
	PREVIEW : 32,
	NOIMG : 64
}

MessageBoxIcons = {
	PREVIEW : 1
}

MessageBox = Class.create();

var filterShade = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/images/shadebg.png',sizingmethod='scale')";
var movedMsgBox = null;
var msgBoxes = new Array();

MessageBox.prototype = {

	box : null,
	shade : null,
	onDialogReturn : null,
	onBeforeDialogReturn : null,
	moving : false,
	offsetX : 0,
	offsetY : 0,
	buttonBox : null,
	causedBlur : false,
	options : 0,
	userData : null,

	initialize : function(caption, message, buttons, icons, options)
	{

		var bodySize = getBodySize();
		var scrollOffset = getScrollOffset();

		this.options = options;

		this.box = document.createElement("DIV");
		this.box.innerHTML = msgBoxDummyBoxContent;
		this.box.style.position = "absolute";

		var msgBoxContent = this.getElementById(this.box, "messageboxcontent");

		var boxTitle = this.getElementById(this.box, "messageboxtitle");
		boxTitle.style.cursor = "move";
		boxTitle.innerHTML = caption;
		boxTitle.msgBox = this;

		boxTitle.onmousedown = function(event)
		{
			if(!event) var event = window.event;
			this.msgBox.moving = true;
			this.msgBox.offsetX = event.offsetX;
			this.msgBox.offsetY = event.offsetY - getScrollOffset();
			movedMsgBox = this.msgBox;
		}

		message = message.replace("<!--fullheight-->", (bodySize.height - 80) + "px");
		message = message.replace("<!--fullwidth-->", (bodySize.width - 64) + "px");

		var boxMessage = document.createElement("DIV");
		boxMessage.style.fontSize = "12px";
		boxMessage.innerHTML = message;				
		msgBoxContent.appendChild(boxMessage);
		this.contentBox = boxMessage;

		var btnbox = document.createElement("DIV");
		btnbox.style.textAlign = "right";
		msgBoxContent.appendChild(btnbox);
		this.buttonBox = btnbox;

		if((options & MessageBoxOptions.FULLSCREEN) == MessageBoxOptions.FULLSCREEN)
		{
			$(msgBoxContent).setStyle({
				width : (bodySize.width - 64) + 'px',
				height : (bodySize.height - 64) + 'px'
			});
		}
				// cancel button
		if((buttons & MessageBoxButtons.CANCEL)==MessageBoxButtons.CANCEL)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.CANCEL;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebabort";
			this.box.cancelButton = btn;
			btnbox.appendChild(btn);
		}

		// close button
		if((buttons & MessageBoxButtons.CLOSE)==MessageBoxButtons.CLOSE)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.CLOSE;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebclose";
			this.box.noButton = btn;
			btnbox.appendChild(btn);
		}

		// ok button
		if((buttons & MessageBoxButtons.OK)==MessageBoxButtons.OK)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.OK;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebok";
			this.box.okButton = btn;
			btnbox.appendChild(btn);
		}

		// no button
		if((buttons & MessageBoxButtons.NO)==MessageBoxButtons.NO)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.NO;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebno";
			this.box.noButton = btn;
			btnbox.appendChild(btn);
		}

		// yes button
		if((buttons & MessageBoxButtons.YES)==MessageBoxButtons.YES)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.YES;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebyes";
			this.box.yesButton = btn;
			btnbox.appendChild(btn);
		}

		// noimg button
		if((buttons & MessageBoxButtons.NOIMG)==MessageBoxButtons.NOIMG)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.NOIMG;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebnopic";
			this.box.noButton = btn;
			btnbox.appendChild(btn);
		}

		// preview button
		if((buttons & MessageBoxButtons.PREVIEW)==MessageBoxButtons.PREVIEW)
		{
			var btn = document.createElement("A");
			btn.href = "javascript:void(0)";
			btn.dialogResult = DialogResult.PREVIEW;
			btn.onclick = this.onBtnClick;
			btn.msgBox = this;
			btn.className = "ebutton ebpreview";
			this.box.noButton = btn;
			btnbox.appendChild(btn);
		}

		// shade
		this.shade = document.createElement("div");
		this.shade.style.width = bodySize.width + "px";
    	this.shade.style.height = bodySize.height + "px";
    	this.shade.style.left = "0px";
    	this.shade.style.top = scrollOffset + "px";
    	this.shade.style.position = "absolute";

    	if(isSafari || isGecko)
    		this.shade.style.background = "url('/images/shadebg.png')";
    	else
    		this.shade.style.filter = (options & MessageBoxOptions.NOSHADE) == MessageBoxOptions.NOSHADE ? "none" : filterShade;

		document.body.appendChild(this.shade);
		document.body.appendChild(this.box);

		boxMessage.style.width = Math.max(boxMessage.scrollWidth, 250) + "px";
		boxMessage.style.height = Math.max(Math.min(bodySize.height, boxMessage.clientHeight) + 20, 50) + "px";

		this.box.style.left = ((bodySize.width - this.box.clientWidth) / 2) + "px";
		this.box.style.top = Math.max(getScrollOffset(), (((bodySize.height - this.box.clientHeight) / 2) + scrollOffset)) + "px";

		var h = Math.min(bodySize.height - 80, Math.max(parseInt(boxMessage.style.height) , boxMessage.scrollHeight));

		boxMessage.style.width = (parseInt(boxMessage.style.width)) + "px";
		boxMessage.style.height = "auto";
		boxMessage.style.overflow = "auto";

		if((this.options & MessageBoxOptions.PERSISTANT) != MessageBoxOptions.PERSISTANT)
			msgBoxes.push(this);

	 	this.shade.style.zIndex = MessageBoxHelper.getNextZIndex();
	 	this.box.style.zIndex = MessageBoxHelper.getNextZIndex();

	 	// handle blur here
		if((this.options & MessageBoxOptions.NOBLUR) != MessageBoxOptions.NOBLUR)
	 	{
	 		var causeBlur = false;
	 		if($('body'))
	 			causeBlur = !$('body').style.filter.match(/enabled=true/);
	 		else if($('madmin'))
	 			causeBlur = !$('madmin').style.filter.match(/enabled=true/);
	 		if(causeBlur)
	 		{
				this.causedBlur = true;
	 			try
	 			{
					if($('body'))
						$('body').style.filter = "progid:DXImageTransform.Microsoft.Blur(pixelradius=3,enabled=false)";
					else if($('madmin'))
						$('madmin').style.filter = "progid:DXImageTransform.Microsoft.Blur(pixelradius=3,enabled=false)";
				}
				catch(e)
				{
					alert(e);
				}
			}
		}

	}
	,
	onBtnClick : function(event)
	{
		if(!event) var event = window.event;
		var o = event.srcElement;
		o.msgBox.onDialogReturn_(event.srcElement, event.srcElement.dialogResult);
	}
	,
	onDialogClose_ : function()
	{
		if(this.onDialogClose)
		{
			try
			{
				return this.onDialogClose();
			}
			catch(e)
			{
			 	alert('onDialogClose: ' + e);
			 	return true;
			}
		}
		return true;
	}
	,
	onBeforeDialogReturn_ : function(sender,result)
	{
		if(this.onBeforeDialogReturn)
		{
			try
			{
				return this.onBeforeDialogReturn(sender, result, this);
			}
			catch(e)
			{
			 	alert('onBeforeDialogReturn: ' + e);
			 	return true;
			}
		}
		return true;
	}
	,
	onDialogReturn_ : function(sender, result)
	{
		if(!this.onBeforeDialogReturn_(event.srcElement, event.srcElement.dialogResult)) return;
		this.Hide();
		if(this.onDialogReturn)
		{
			try
			{
				this.onDialogReturn(sender, result, this);
			}
			catch(e)
			{
			 	alert('onDialogReturn: ' + e);
			}
		}
		this.Close();
	}
	,
	FixBlur : function()
	{
		if(this.causedBlur)
		{
			try
			{
				if($('body'))
					$('body').style.filter = "none";
				else if($('madmin'))
					$('madmin').style.filter = "none";
			}
			catch(e) { }
		}
	}
	,
	Hide : function()
	{
		this.shade.style.display = "none";
	 	this.box.style.display = "none";
	 	this.FixBlur();
	}
	,
	Show : function()
	{
		this.shade.style.display = "block";
	 	this.box.style.display = "block";
	 	if((this.options & MessageBoxOptions.PERSISTANT) == MessageBoxOptions.PERSISTANT)
	 	{
			var bodySize = getBodySize();
			var scrollOffset = getScrollOffset();
	 		this.shade.style.left = "0px";
    		this.shade.style.top = scrollOffset + "px";
	 		this.box.style.left = ((bodySize.width - this.box.clientWidth) / 2) + "px";
			this.box.style.top = (((bodySize.height - this.box.clientHeight) / 2) + scrollOffset) + "px";
			this.shade.style.zIndex = MessageBoxHelper.getNextZIndex();
	 		this.box.style.zIndex = MessageBoxHelper.getNextZIndex();
		}
		this.Reposition();
	}
	,
	Reposition : function()
	{
		var bodySize = getBodySize();
		var scrollOffset = getScrollOffset();
	 	this.shade.style.left = "0px";
    	this.shade.style.top = scrollOffset + "px";
	 	this.box.style.left = ((bodySize.width - this.box.clientWidth) / 2) + "px";
		this.box.style.top = (((bodySize.height - this.box.clientHeight) / 2) + scrollOffset) + "px";
		this.shade.style.zIndex = MessageBoxHelper.getNextZIndex();
	 	this.box.style.zIndex = MessageBoxHelper.getNextZIndex();
	}
	,
	Resize : function()
	{
		var bodySize = getBodySize();
		this.contentBox.style.height = this.contentBox.scrollHeight + "px";
		this.contentBox.style.width = this.contentBox.scrollWidth + "px";
	}
	,
	Close : function()
	{
		if(!this.onDialogClose_())
		{
			this.Show();
			return;
		}
		this.FixBlur();
		if((this.options & MessageBoxOptions.PERSISTANT) == MessageBoxOptions.PERSISTANT)
		{
		 	this.Hide();
		 	return;
		}
		this.shade.removeNode(true);
		this.box.removeNode(true);
		msgBoxes.pop(this);
	}
    ,
    FocusObject : function(elementId)
    {
        var elm = this.getElement(elementId);
        if(elm)
        {
             try { elm.focus(); } catch(e) { }
        }
    }
    ,
	getElement : function(id)
	{
		var root = this.contentBox;
		var all = root.getElementsByTagName("*");
		for(var i=0;i<all.length;i++)
		{
			if(all[i].id==id) return(all[i]);
		}
		return(null);
	}
	,
	getElementById : function(root, id, elementType)
	{
		if(!elementType)
			elementType = "*";
		var all = root.getElementsByTagName(elementType);
		for(var i=0;i<all.length;i++)
		{
			if(all[i].idf==id) return(all[i]);
			if(all[i].id==id) return(all[i]);
		}
		return(null);
	}
	,
	getElementsByTagName : function(tagName)
	{
		var elements = new Array();
		var root = this.contentBox;
		var all = root.getElementsByTagName("*");
		for(var i=0;i<all.length;i++)
		{
			if(all[i].tagName.toLowerCase()==tagName.toLowerCase()) elements.push(all[i]);
		}
		return elements;
	}
	,
	HideButton : function(id)
	{
		var buttons = this.buttonBox.getElementsByTagName("A");
		for(var i=0;i<buttons.length;i++)
		{
		 	if(buttons[i].dialogResult==id)
		 		buttons[i].style.display = 'none';
		}
	}
	,
	ShowButton : function(id)
	{
		var buttons = this.buttonBox.getElementsByTagName("A");
		for(var i=0;i<buttons.length;i++)
		{
		 	if(buttons[i].dialogResult==id)
		 		buttons[i].style.display = 'block';
		}
	}
}

var MessageBoxHelper =
{
	getNextZIndex : function()
	{
	 	var divs = document.getElementsByTagName("DIV");
	 	var maxZ = 1000;
	 	for(var i = 0; i <divs.length;i++)
	 	{
	 		var z = divs[i].style.zIndex;
	 		if(z)
	 		{
		 		var n = parseInt(z);
		 	 	maxZ = Math.max(n, maxZ);
		 	}
		}
		maxZ++;
		return maxZ;
	}
	,
	CloseTopMost : function()
	{
		if(FileBrowser.IsOpen())
		{
			FileBrowser.box.onDialogReturn_(this, DialogResult.CANCEL);
			return;
		}
	 	if(msgBoxes.length>0)
	 	{
	 		try { msgBoxes[msgBoxes.length-1].onDialogReturn_(null,DialogResult.CANCEL); } catch(e) { }
	 	 	return true;
		}
		return false;
	}
	,
	HasVisibleBoxes : function()
	{
	 	for(var i=0;i<msgBoxes.length;i++)
	 	{
	 	 	if(msgBoxes[i].box.style.display!="none") return true;
		}
	 	return false;
	}
	,
	Contains : function(element)
	{
	 	for(var i=0;i<msgBoxes.length;i++)
	 	{
	 	 	if(msgBoxes[i].box.contains(element)) return true;
		}
		return false;
	}
}

document.attachEvent("onmousemove", msgBoxMove);
document.attachEvent("onmouseup", boxTitleMouseUp);

function msgBoxMove(event)
{
	if(!event) var event = window.event;
	if(movedMsgBox != null)
	{
		if(movedMsgBox.moving)
		{
			var newPosX = Math.max(0, (event.clientX - movedMsgBox.offsetX));
			var newPosY = Math.max(getScrollOffset(), (event.clientY - movedMsgBox.offsetY));

			if((newPosX + movedMsgBox.box.scrollWidth) > getBodySize().width)
			{
				movedMsgBox.box.style.left = (getBodySize().width - movedMsgBox.box.scrollWidth) + "px";
			}
			else
			{
				movedMsgBox.box.style.left = newPosX + "px";
			}

			if((newPosY + movedMsgBox.box.scrollHeight) > getBodySize().height)
			{
				movedMsgBox.box.style.top = (getBodySize().height - movedMsgBox.box.scrollHeight) + "px";
			}
			else
			{
				movedMsgBox.box.style.top = newPosY + "px";
			}

			getSelection().clear();

		}
		if(event.button == 0)
		{
			boxTitleMouseUp();
		}
	}
}

function boxTitleMouseUp()
{
	if(movedMsgBox!=null)
	{
		movedMsgBox.moving = true;
		movedMsgBox = null;
	}
}

function showPreviewBox()
{
	var mb = new MessageBox('Förhandsgranska', "Tryck OK för att återgå", MessageBoxButtons.OK, 0, MessageBoxOptions.NOSHADE);
}