var iOffsetX_Const = 10;
var iOffsetY_Const;
var isIEWIN = (document.all) && (navigator.platform == "Win32");
var isIEMAC = (document.all) && (navigator.platform != "Win32");
var isIE = document.all;
var isIE7 = navigator.appVersion.indexOf("MSIE 7") > 0? true:false;
var isNN = !document.all;
var isN4 = document.layers;
var isHot = false;
var isVisible = false;

// Class for features - START
function features()
{
	// Properties
	this.focusfield = new focusfield();

	// Methods
	this.clear = function()
	{
		this.focusfield.form = "";
		this.focusfield.field = "";
	}
}

function focusfield()
{
	this.form = "";
	this.field = "";
}

var oFeatures = new features();
// Class for features - END

function moveInit(e)
{
	if(isVisible)
	{
		if(isIE && !isIE7) oTopElement = "BODY"
		else oTopElement = "HTML";
		
		oMessageLayer = isIE ? document.all.messageLayer : document.getElementById("messageLayer");  
		oSourceElement = isIE ? event.srcElement : e.target;  

		while ((oSourceElement.tagName != oTopElement) && (oSourceElement.id != "titleBar") && (oSourceElement.id != "lyrResize"))
		{
			oSourceElement = isIE ? oSourceElement.parentElement : oSourceElement.parentNode;
		}

		if (oSourceElement.id == "titleBar")
		{
			clientX = isIE ? event.clientX : e.clientX;
			clientY = isIE ? event.clientY : e.clientY;
			offsetX = isIE ? event.offsetX : e.offsetX;
			offsetY = isIE ? event.offsetY : e.offsetY;
			nowX = parseInt(oMessageLayer.style.left);
			nowY = parseInt(oMessageLayer.style.top);
			moveEnabled = true;
			document.onmousemove = moveLayer;
		}

		if (oSourceElement.id == "lyrResize")
		{
			clientX = isIE ? event.clientX : e.clientX;
			clientY = isIE ? event.clientY : e.clientY;
			offsetX = isIE ? event.offsetX : e.offsetX;
			offsetY = isIE ? event.offsetY : e.offsetY;
			nowX = parseInt(oMessageLayer.style.left);
			nowY = parseInt(oMessageLayer.style.top);
			resizeEnabled = true;
			document.onmousemove = resizeLayer;
		}
	}
}

function moveLayer(e)
{
	if (!moveEnabled) return;

	if(isIEWIN)
	{
		document.getElementById("frContainer").style.left = isIE ? nowX + event.clientX - clientX : nowX + e.clientX - clientX; 
		document.getElementById("frContainer").style.top = isIE ? nowY + event.clientY - clientY : nowY + e.clientY - clientY;
	}

	oMessageLayer.style.left = isIE ? nowX + event.clientX - clientX : nowX + e.clientX - clientX; 
	oMessageLayer.style.top = isIE ? nowY + event.clientY - clientY : nowY + e.clientY - clientY;

	return false;  
}

function resizeLayer(e)
{
	if (!resizeEnabled) return;

	var sizeX = event.clientX + document.body.scrollLeft - nowX - iOffsetX_Const + 16 - offsetX;
	var sizeY = event.clientY + document.body.scrollTop - nowY - iOffsetY_Const + 16 - offsetY;

	if(sizeX < 240) sizeX = 240;
	if(sizeY < 70) sizeY = 70;
	
	document.getElementById("tblMain").width = sizeX;
	document.getElementById("lyrResize").style.width = sizeX;
	document.getElementById("titleBar").style.width = sizeX - 40;
	document.getElementById("frURL").width = sizeX;
	document.getElementById("frURL").height= sizeY - 30;
	document.getElementById("messageLayer_Text").style.width = sizeX;
	document.getElementById("messageLayer_Text").style.height= sizeY - 50;
	document.getElementById("frContainer").style.width = sizeX + iOffsetX_Const;
	document.getElementById("frContainer").style.height = sizeY + iOffsetY_Const;

	oMessageLayer.style.width = sizeX;
	oMessageLayer.style.height = sizeY;

	return false;  
}

function hideMessage()
{
	// Hide the layer
	document.getElementById("frContainer").style.visibility = "hidden";
	document.getElementById("messageLayer").style.visibility = "hidden";

	// Handle the focus field feature
	if(oFeatures.focusfield.form != "" && oFeatures.focusfield.field != "")
	{
		document.forms[oFeatures.focusfield.form].elements[oFeatures.focusfield.field].focus();
	}

	// Clear all features
	oFeatures.clear();
	
	isVisible = false;
}

/*
features: This String parameter is a list of items separated by commas. 
          Each item consists of an option and a value, separated by an equals sign.
          If an item is not specified then it is disabled.
					The features parameter is optional.

The following features are supported:

focusfield = {Name of the form.Name of the field that will receive focus when the layer is closed.}

Example: features = "focusfield=dataform.txtField1"
*/
function showMessage(message, url, layerWidth, layerHeight, layerLeft, layerTop, features)
{
	// Check parameters
	if(message == undefined) return false;
	if(url == undefined) return false;
	if(layerWidth == undefined) return false;
	if(layerHeight == undefined) return false;
	if(layerLeft == undefined) return false;
	if(layerTop == undefined) return false;

	// Check for Netscape 4.x
	if(isN4)
	{
		if(url)
		{
			parent.popupWindow(url,"newwindow",500,400,"no","yes",200,200);
		}
		else
		{
			alert(message);
		}
	}

	var winW;
	var winH;
	var scrollL;
	var scrollT;

	// Init
	iBeReady =  true;
	document.getElementById("frURL").style.display = "none";
	document.getElementById("trText").style.display = "none";

	// Check features
	if(features != undefined)
	{
		if(features != "")
		{
			var aFeatures = features.split(",");
	
			for (var i=0; i < aFeatures.length; i++)
			{
				var aOneFeature = aFeatures[i].split("=");
				var aTemp;
	
				switch (aOneFeature[0])
				{
					case "focusfield" :
						aTemp = aOneFeature[1].split(".");
	
						oFeatures.focusfield.form = aTemp[0];
						oFeatures.focusfield.field = aTemp[1];
	
						break;
	
					default : 
						alert("Wrong feature for the showMessage method!");
				}
			}
		}
	}
	
	// Init window dimensions and scoll offsets
	if(isIE)
	{
		if(isIEWIN)
		{
			scrollL = document.body.scrollLeft;
			scrollT = document.body.scrollTop;
			document.getElementById("imgLogo").style.cursor = "move";
		}

		if(isIEMAC)
		{
			scrollL = 0;
			scrollT = 100;
		}

		winW = document.body.offsetWidth;
		winH = document.body.offsetHeight;
	}
	else
	{
		winW = window.innerWidth;
		winH = window.innerHeight;
		scrollL = window.pageXOffset;
		scrollT = window.pageYOffset;
	}


	var wWd = winW / 4;
	var wHd = winH / 4;
	var wLd = -1;
	var wTd = -1;
	var wW = layerWidth;
	var wH = layerHeight;
	var wL = layerLeft;
	var wT = layerTop;

	if(!layerWidth)wW = wWd;
	if(!layerHeight)wH = wHd;
	if(!layerLeft)wL = wLd;
	if(!layerTop)wT = wTd;

	if(wW < 240) wW = 240;
	if(wH < 70) wH = 70;

	if(parseInt(wL) < 0)wL = ((winW - wW) / 2) + scrollL;
	if(parseInt(wT) < 0)wT = ((winH - wH) / 2) + scrollT;

	document.getElementById("tblMain").width = wW;
	document.getElementById("lyrResize").style.width = wW;
	document.getElementById("tdCloseButton").width = 40;
	document.getElementById("titleBar").style.width = wW - 40;

	if(url)
	{
		// View an URL in the iframe
		iOffsetY_Const = 20;

		document.getElementById("frURL").width = wW;
		document.getElementById("frURL").height= wH - 50;
		document.getElementById("frURL").style.display = "block";
		document.getElementById("frURL").src = url;
		document.getElementById("tblMain").height = "";
	}
	else
	{
		// Display a text
		iOffsetY_Const = 13;
		
		document.getElementById("messageLayer_Text").innerHTML = message;
		document.getElementById("trText").style.display = "block";
		
		if(isIEWIN)
		{
			document.getElementById("tblMain").height = "100%";
			document.getElementById("messageLayer_Text").style.width = wW;
			document.getElementById("messageLayer_Text").style.height= wH - 50;
			document.getElementById("messageLayer_Text").style.overflowX = "hidden";
			document.getElementById("messageLayer_Text").style.overflowY = "auto";
		}

		if(!isIE && document.getElementById("messageLayer_Text").offsetHeight > wH)
		{
			wH = document.getElementById("messageLayer_Text").offsetHeight + 30;
			if(parseInt(wT) < 0)wT = ((winH - wH) / 2) + scrollT;
		}
	}
	
	// Fix for IE7
	if(wT < 0) wT = 50;
	
	// Show the container
	if(isIEWIN)
	{
		var oContainer = document.getElementById("frContainer");
		oContainer.style.left = wL;
		oContainer.style.top = wT;
		oContainer.style.width = wW + iOffsetX_Const;
		oContainer.style.height = wH + iOffsetY_Const;
		oContainer.style.visibility = "visible";

		document.getElementById("lyrResize").style.display = "block";
	}

	// Show the layer
	var oLayer = document.getElementById("messageLayer");
	oLayer.style.left = wL;
	oLayer.style.top = wT;
	oLayer.style.width = wW;
	oLayer.style.height = wH;
	oLayer.style.visibility = "visible";
	
	isVisible = true;
}

if(!isIEMAC)
{
	document.onmousedown = moveInit;
	document.onmouseup = Function("moveEnabled=false;resizeEnabled=false");
}