var http = getHTTPObject(); // We create the HTTP Object
var url='/servlet/getStatus';
var isSearching = false;
var stopRefresh = false;
var	statusWidth = 300;
var statusHeight = 150;

function handleHttpResponse() {
	if (http.readyState == 4) {
		if (http.status==404) {
			alert("Page not found!");
			window.location = 'http://www.google.com';
		}
		if (http.status==200) {
			statusBox = document.getElementById("statusDiv");
			statusMsg = http.responseXML.getElementsByTagName("status")[0];
			if (statusMsg) {
				statusCode = statusMsg.getElementsByTagName("statusCode")[0].firstChild.nodeValue;
				if (typeof statusMsg.getElementsByTagName("statusMsg")[0] != 'undefined') {
					statusString = statusMsg.getElementsByTagName("statusMsg")[0].firstChild.nodeValue;
				} else {
					statusString = '';
				}
				if (statusString.length>100) {
					statusString = statusString.substring(0,97)+"...";
				}
				statusOriginalString = statusMsg.getElementsByTagName("statusOriginalMsg")[0].firstChild.nodeValue;
				if (statusOriginalString!="...") {
					statusOriginalString="("+statusOriginalString+")";
				} else {
					statusOriginalString="";
				}
				statusCompletion = statusMsg.getElementsByTagName("statusCompletion")[0].firstChild.nodeValue;
				statusBox.innerHTML="<center><div style='height: 60;'>"+statusString+"<br/>"+statusOriginalString+
				"</div></center><br/><div style='margin-left: 50; margin-right: 50; width:200; height:30; border: 1px solid black'>"+
				"<div style='width:"+(2*statusCompletion)+"; height:30; background-color: blue'></div></div>";
				if (statusCompletion==100) {
					stopRefresh = true;
					setTimeout("reloadPage()",1500);
				}
			}
			isSearching = false;
		}
	}
}

function reloadPage() {
	currentPage = window.location.href;
	window.location.href = currentPage;
}

function createStatus() {
	pageSize = getPageSize();
	var objBody							= document.getElementsByTagName("body").item(0);

	// create overlay div
	var objOverlay						= document.createElement("div");	
	objOverlay.setAttribute('id','boxOverlay');
	objOverlay.style.display			= 'none';
	objOverlay.style.position			= 'absolute';
	objOverlay.style.width				= pageSize[0];
	objOverlay.style.height				= pageSize[1];
	objOverlay.style.top				= '0';
	objOverlay.style.left				= '0';
	objOverlay.style.zIndex				= '90';
	objOverlay.style.backgroundColor	= '#000000';
	objOverlay.style.opacity			= '.25';
	objOverlay.style.filter				= 'alpha(opacity=25)';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	objOverlay.style.display			= 'block';
	objOverlay.style.visibility			= 'visible';

	statusBox = document.createElement("div");
	statusBox.setAttribute('id','statusDiv');
	statusBox.style.display="none";
	objBody.insertBefore(statusBox, objBody.firstChild);
	// width and height are global variables
	statusBox.style.zIndex = '100';
	statusBox.style.width = statusWidth;
	statusBox.style.height = statusHeight;
	statusBox.style.backgroundColor="white";
	statusBox.style.position = 'absolute';
	statusBox.style.padding = 0;
	statusBox.style.border = "3px solid #000000";
	posX = (pageSize[0]-statusWidth)/2;
	posY = (pageSize[1]-statusHeight)/2;
	statusBox.style.left=posX;
	statusBox.style.top=posY;
	statusBox.style.display="block";
	if (window.innerHeight) {
		window.captureEvents(Event.RESIZE);
	}
	window.onresize = adaptWindow;
	fillData();
}

function adaptWindow() {
objOverlay = document.getElementById('boxOverlay');
	pageSize = getPageSize();
	objOverlay.style.width				= pageSize[0];
	objOverlay.style.height				= pageSize[1];
	statusBox = document.getElementById('statusDiv');
	posX = (pageSize[0]-statusWidth)/2;
	posY = (pageSize[1]-statusHeight)/2;
	statusBox.style.width = statusWidth;
	statusBox.style.height = statusHeight;
	statusBox.style.left=posX;
	statusBox.style.top=posY;
}
// Core code from - quirksmode.org
function getPageSize() {
	var xScroll, yScroll;

	if (window.innerHeight && window.scrollMaxY) {
		xScroll							= document.body.scrollWidth;
		yScroll							= window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll							= document.body.scrollWidth;
		yScroll							= document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll							= document.body.offsetWidth;
		yScroll							= document.body.offsetHeight;
	}

	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth						= self.innerWidth;
		windowHeight					= self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth						= document.documentElement.clientWidth;
		windowHeight					= document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth						= document.body.clientWidth;
		windowHeight					= document.body.clientHeight;
	}

	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight						= windowHeight;
	} else {
		pageHeight						= yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){
		pageWidth						= windowWidth;
	} else {
		pageWidth						= xScroll;
	}
	arrayPageSize						= new Array(pageWidth,pageHeight,windowWidth,windowHeight)
	return arrayPageSize;
}


function fillData() {
	if (!isSearching) {
       var urlFinal = url+"?ts="+(new Date()).getTime();
	   http.open("GET", urlFinal, true);

	   isSearching = true;
	   http.onreadystatechange = handleHttpResponse;
	   http.send(null);
	}
	if (!stopRefresh) {
		setTimeout("fillData()", 1000); // wait (in milliseconds) for next refresh
	}
}

function getHTTPObject() {
	var xmlhttp;
	/*@cc_on
	@if (@_jscript_version >= 5)
		try {
			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (E) {
				xmlhttp = false;
			}
		}
	@else xmlhttp = false;
	@end @*/
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (e) {
			xmlhttp = false;
		}
	} return xmlhttp;
}