var APP_URL = 'http://dngp1.aero.und.edu/infomart';
var URL_ROOT = 'http://dngp1.aero.und.edu';
var IMG_MAX_DIM = 1200;
var IMG_DIM = 600;
var IMG_MIN_DIM = 400;
var SIZE_STEP = 50;
var NO_LAYERS_IMG = 'images/noLayers.png';
var EMPTY_LAYER_IMG = 'images/dngp2.gif';
var BASE_DOC_TITLE = 'ZoneMAP';
var NDVISensors = new Array('MODIS250','ASTER VNIR','MSS','TM','ETM+');
var GNDVISensors = new Array('ASTER VNIR','MSS','TM','ETM+');
var ddms = new Array('DEGREES','MINUTES','SECONDS'); // ddm - degree display mode
var degreeDisplayMode = 3;
var arrowAOI = 'AOI';
var mousePic = '';
var sliderMin=400;
var sliderMax=1200;

//lonUMACMax = -89.0;
//lonUMACMin = -117.0;
longMax = -89.0; //180.0;
longMin = -117.0; //-180.0;

//latUMACMax = 49.0;
//latUMACMin = 40.0;
latiMax = 49.0; //90.0;
latiMin = 40.0; //-90.0;

Array.prototype.in_array = function ( obj ) {
	var len = this.length;
	for ( var x = 0 ; x <= len ; x++ ) {
		if ( this[x] == obj ) return true;
	}
	return false;
}

function isNull(val){ return(val==null); }

function retrieveClassifyImage() {
	return classifyImage;
}

function retrieveClassifyZones() {
	alert(classifyZones);
	return classifyZones;
}

function onLoad_Init() {
	// Create overlay image
	//createOverlayImage();
	var overlayImg = parent.document.getElementById('overlayImg');
	overlayImg.src = EMPTY_LAYER_IMG;
	
	// Initialize upload layer
	var userLayerList = parent.document.getElementById('userLayers');
	if(userLayerList.length){
		userLayerList.selectedIndex=0;
		newUserLayer(userLayerList.value, userLayerList.options[userLayerList.selectedIndex].label, 'userselectPic', 'userlayerName', 'layer', "manageUserData");
	} else {
		USP = document.getElementById('userselectPic');
		USP.src = NO_LAYERS_IMG;
		IW = USP.width;
		IH = USP.height;
		imageWidth = (IW>=IH) ? IMG_DIM : (IW*IMG_DIM/IH);
		imageHeight = (IH>=IW) ? IMG_DIM : (IH*IMG_DIM/IW);
		USP.width = imageWidth;
		USP.height = imageHeight;
	}
	
	// Initialize DNGP image
	var sensorList = parent.document.getElementById('sensors');
	var selectImgList = parent.document.getElementById('DNGP');
	if(selectImgList.length>1){
		sensorList.selectedIndex=1;
		selectImgList.selectedIndex=1;
		newUserLayer(selectImgList.options[1].value, selectImgList.options[1].label, 'selectPic', 'layerName', 'image', "createZoneMap");
	}
}

function fakeTabClick(tabID) {
	var
	a, 			/* element that triggered the onclick event */
	self, 		/* the tabber object */
	tabberIndex, /* index of the tab that triggered the event */
	
	a = document.getElementById(tabID);
	if (!a.tabber) { return false; }
	self = a.tabber;
	tabberIndex = a.tabberIndex;
	a.blur();
    setCookie(self.cookie, tabberIndex);
	newMousePic(tabberIndex);
	self.tabShow(tabberIndex);
}

function updateCoords(task){
	if (updateCoords.arguments.length >0) { // onMouseOver or onMouseOut
		var oact = (task=="movein") ? "updateCoords" : "null";
		eval("event.srcElement.onmousemove="+oact);
		thePic = document.getElementById(mousePic);
		lonDisplay = document.getElementById('lon_'+mousePic);
		latDisplay = document.getElementById('lat_'+mousePic);

	} else { // the responses to the captured events
		var theEvent = event.type;
		var posX = event.offsetX; // mouse coord relative to the image
		var posY = event.offsetY;
		if((typeof(lonMax)!="undefined") && (typeof(lonMin)!="undefined")){
			posWidth = thePic.clientWidth;
			lonDeg = posX/posWidth*(lonMax-lonMin)+lonMin;
			lonDisplay.innerHTML = convert_degree(lonDeg, 0);
		}
		if((typeof(latMax)!="undefined") && (typeof(latMin)!="undefined")){
			posHeight = thePic.clientHeight;
			latDeg = latMax-(posY/posHeight*(latMax-latMin));
			latDisplay.innerHTML = convert_degree(latDeg, 1);
		}
	}
}

function updateCoordsFF(evt){
	evt = (evt) ? evt : ((event) ? event : null);
	thePic = document.getElementById(mousePic);
	lonDisplay = document.getElementById('lon_'+mousePic);
	latDisplay = document.getElementById('lat_'+mousePic);
	posX = evt.pageX - findPosX(thePic);
	posY = evt.pageY - findPosY(thePic);
	
	posWidth = thePic.clientWidth;
	lonDeg = posX/posWidth*(lonMax-lonMin)+lonMin;
	posHeight = thePic.clientHeight;
	latDeg = latMax-(posY/posHeight*(latMax-latMin));
	lonDisplay.innerHTML = convert_degree(lonDeg, 0);
	latDisplay.innerHTML = convert_degree(latDeg, 1);
}

function convert_degree(lat_or_lon, is_lat){
	var retString = new Array();
	switch (degreeDisplayMode) {
		case 1:
			retString = lat_or_lon.toFixed(6)+'&#176; ';
			break;
		case 2:
			ending = (is_lat)?((lat_or_lon < 0)?'S':'N'):((lat_or_lon < 0)?'W':'E');
			lat_or_lon = Math.abs(lat_or_lon);
			degree = Math.floor(lat_or_lon);
			minute = ((lat_or_lon - degree) * 60).toFixed(4);
			if(minute<10) { minute = "0"+minute; }
			retString = degree+'&#176; '+minute+'\' '+ending;
			break;
		case 3:
			ending = (is_lat)?((lat_or_lon < 0)?'S':'N'):((lat_or_lon < 0)?'W':'E');
			lat_or_lon = Math.abs(lat_or_lon);
			degree = Math.floor(lat_or_lon);
			lat_or_lon_minute = (lat_or_lon - degree) * 60;
			minute = Math.floor(lat_or_lon_minute);
			if(minute<10) { minute = "0"+minute; }
			lat_or_lon_second = (lat_or_lon_minute - minute) * 60;
			second = lat_or_lon_second.toFixed(2);
			if(second<10) { second = "0"+second; }
			retString = degree+'&#176; '+minute+'\' '+second+'" '+ending;
	}
	return retString;
}

function nextFormat(theEvent, tab){
	arrow = document.getElementById('arrow'+tab);
	formatOffset = 1;
	degreeDisplayMode += formatOffset;
	if((degreeDisplayMode<1)||(degreeDisplayMode>3)) {
		degreeDisplayMode = degreeDisplayMode-(formatOffset*3);
	}
	ddm = document.getElementById("ddmMUD");
	ddm.innerHTML = "DECIMAL "+ddms[degreeDisplayMode-1];
	ddm = document.getElementById("ddmCZM");
	ddm.innerHTML = "DECIMAL "+ddms[degreeDisplayMode-1];
	if(document.getElementById("ddmAOI")){
		ddm = document.getElementById("ddmAOI");
		ddm.innerHTML = "DECIMAL "+ddms[degreeDisplayMode-1];
		setLatLonOptions();
		latLonWidgetVisibility();
	}
	lonDisplay.innerHTML = convert_degree(lonDeg, 0);
	latDisplay.innerHTML = convert_degree(latDeg, 1);
}

function setLatLonOptions(){
	setOpt1("lat0");	setOpt2("lat0");	setOpt3("lat0");
	setOpt1("lat1");	setOpt2("lat1");	setOpt3("lat1");
	setOpt1("lon0");	setOpt2("lon0");	setOpt3("lon0");
	setOpt1("lon1");	setOpt2("lon1");	setOpt3("lon1");
}

function showHelp(theURL, thewidth, xPos, yPos, divHt, titlebar){
	var helpDivHeight = (divHt) ? divHt+"px" : null ;
	var helpObj=document.all? document.all["htmlHelp"] : document.getElementById ? document.getElementById("htmlHelp") : "";
	document.getElementById("htmlHelpContents").style.height = helpDivHeight;
	if (typeof thewidth!="undefined") helpObj.style.width=thewidth+"px";
	//if (typeof xPos!="undefined") helpObj.style.left=xPos+"px";
	//if (typeof yPos!="undefined") helpObj.style.top=yPos+"px";
	if (helpObj.style.left=="") helpObj.style.left=xPos+"px";
	if (helpObj.style.top=="") helpObj.style.top=yPos+"px";
	if (typeof titlebar=="undefined") titlebar="HELP CONTENTS";
	document.getElementById("floatTitle").innerHTML=titlebar;
	
	if(theURL=="Intro") {
		document.getElementById('hideCheckbox').style.display = 'block';
		if(getCookie("hideHelp")) { document.getElementById('doNotShow').checked = true; }
	} else {
		document.getElementById('hideCheckbox').style.display = 'none';
	}
	if(theURL!='tutorials'){
		makeGETRequest("/ajaxProxy.html?ajax_fname="+theURL);
	} else {
		makeGETRequest("/training/tutorials.html");
	}
	if (document.layers){ helpObj.style.visibility = 'show';
	}else{ helpObj.style.visibility = 'visible'; }
	helpObj.style.opacity = 9.4/10;
	helpObj.style.filter = 'alpha(opacity=' + 9.4*10 + ')';
	return false;
}

function hideHelp(){
	if(checkBoxClick) {
		checkBoxClick=false;
		if(document.getElementById('doNotShow').checked) {
			expiresDate = new Date();
			expiresDate.setYear(expiresDate.getFullYear()+10);
			setCookie("hideHelp", 'true', expiresDate); // Ten years out
		} else {
			deleteCookie("hideHelp");
		}
	}
	var helpObj=document.all? document.all["htmlHelp"] : document.getElementById ? document.getElementById("htmlHelp") : "";
	if (document.layers){ helpObj.style.visibility = 'hide';
	}else{ helpObj.style.visibility = 'hidden'; }
	if(document.all){
		if(document.getElementById('Captivate1')){
			document.getElementById('Captivate1').movie = '/ipcc.swf'; }
	} else {
		if(document.getElementById('Captivate1')){
		document.getElementById('Captivate1').innerHTML = ""; }
	}
}

function showAdmin(){
	if(admin){
		HF = document.getElementById('hiddenFrame');
		HF.style.left = (document.getElementById('mainInterface').offsetWidth+16)+"px";
		toggleDisplay('hiddenFrame');
		HF2 = document.getElementById('hiddenFrame2');
		HF2.style.left = (document.getElementById('mainInterface').offsetWidth+16)+"px";
		toggleDisplay('hiddenFrame2');
	}
}

function displayMsg(successFlag, msgTxt){
	if(!successFlag) {
		message = "ERROR! -- ";
		hideOverlayImg();
		//document.getElementById('MUDmsg').style.textDecoration = "blink";
		//document.getElementById('CZMmsg').style.textDecoration = "blink";
	}
	else {
		message = "";
		//document.getElementById('MUDmsg').style.textDecoration = "";
		//document.getElementById('CZMmsg').style.textDecoration = "";
	}
	//alert(msgTxt);
	if(msgTxt) { message += msgTxt; }
	if(!successFlag) {
		alert(message);
	} else {
		document.getElementById('loginMsg').innerHTML = message;
		document.getElementById('MUDmsg').innerHTML = message;
		document.getElementById('CZMmsg').innerHTML = message;
	}
}

function toggleDisplay(id) {
	var e = document.getElementById(id);
	if(e.style.display == 'block')
		e.style.display = 'none';
	else {
		document.getElementById("captchaZonemap").src="CaptchaSecurityImages.php?width=100&height=40&characters=5&nocache="+Math.floor(Math.random()*100001);
		document.getElementById("security_code").value="";
		e.style.display = 'block';
	}
}

function resizeImage(stepSize) {
	minusButton = document.getElementById('minus');
	minus2Button = document.getElementById('minus2');
	minusButton.style.visibility = 'visible';
	minus2Button.style.visibility = 'visible';

	plusButton = document.getElementById('plus');
	plus2Button = document.getElementById('plus2');
	plusButton.style.visibility = 'visible';
	plus2Button.style.visibility = 'visible';

	if(arguments[1]){
		IMG_DIM = arguments[1];
	} else {
		IMG_DIM += stepSize;
		frames['hiddenFrame'].location.href = 'updateImgDim.html?max='+IMG_DIM;
	}
	if(IMG_DIM<=IMG_MIN_DIM){
		IMG_DIM = IMG_MIN_DIM;
		minusButton.style.visibility = 'hidden';
		minus2Button.style.visibility = 'hidden';
	} else if(IMG_DIM>=IMG_MAX_DIM){
		IMG_DIM = IMG_MAX_DIM;
		plusButton.style.visibility = 'hidden';
		plus2Button.style.visibility = 'hidden';
	}
    i = parseInt(getCookie('infomarttabber'));
    if (!isNaN(i)) {
		setSlider(i+1);
	}

	IW = imageWidth;
	IH = imageHeight;
	imageWidth = (IW>=IH) ? IMG_DIM : (IW*IMG_DIM/IH);
	imageHeight = (IH>=IW) ? IMG_DIM : (IH*IMG_DIM/IW);
	document.getElementById('userselectPic').width = imageWidth;
	document.getElementById('userselectPic').height = imageHeight;
	//newUserLayer(displayLayer_MUD, displayLayerName_MUD, 'userselectPic', 'userlayerName', 'layer', "manageUserData");
	if(window.classifyImage) {
		CIW = classifyImageWidth;
		CIH = classifyImageHeight;
		classifyImageWidth = (CIW>=CIH) ? IMG_DIM : (CIW*IMG_DIM/CIH);
		classifyImageHeight = (CIH>=CIW) ? IMG_DIM : (CIH*IMG_DIM/CIW);
		document.getElementById('selectPic').width = classifyImageWidth;
		document.getElementById('selectPic').height = classifyImageHeight;
	} else {
		//newUserLayer(displayLayer, displayLayerName, 'selectPic', 'layerName', displayLayerType, "createZoneMap");
		document.getElementById('selectPic').width = imageWidth;
		document.getElementById('selectPic').height = imageHeight;
	}
}

function validateDataGrid(colCt){
	cols = new Array;
	errorCols = false;
	colSetCt = 0;
	for(i=1; i<colCt; i++) {
		thisSelect = document.getElementById('colSelect_'+i);
		if(thisSelect){
			if(thisSelect.selectedIndex>0){
				if(cols[thisSelect.selectedIndex]>0){
					errorCols = true;
					break;
				} else {
					cols[thisSelect.selectedIndex]=i;
					colSetCt++;
				}
			}
		}
	}
	if(colSetCt!=3) {
		errorCols = true;
	}
	if(errorCols) {
		alert("Please select one longitude, one latitude, and one data column.");
		return false;
	} else {
		//alert("should submit");
		return true;
	}
}