// The following variables are global to the page.
// These vars reference HTML tags in the page whose
// values may be read or set dynamically.
    var m_radZoomIn;
    var m_radRecenter;
    var m_txtXCoord;
    var m_txtYCoord;
    var m_imgLoading;
    var m_imgMapCanvas;
    var m_divMapBorder;
    var m_divZoomBox;
	var m_divMapTools;
	var m_divNorth;
	var m_divSouth;
	var m_divEast;
	var m_divWest;
	var m_divNorthEast;
  	var m_divSouthEast;
  	var m_divNorthWest;
  	var m_divSouthWest;
    var	m_hvMinX;
    var	m_hvMinY;
    var	m_hvMaxX;
    var	m_hvMaxY;
	var m_hvMapPage;
	
	//flag used to see if a select control is being focused(mousedown occurs on it), 0 is no, 1 is yes
	var isSelActive=0;
	
	//language used to display error message
	var DispLang;

	// These vars represent javascript classes that will
	// handle logic.
    var m_mapViewer;  // Object of type map.  Handles map coordinate management.

    var m_zbxZoom;      // Object of type zoombox.  Handles drawing the zoombox.  
				        // Operates entirely within page coordinates and has no 
				        // awareness of the map space or even the image that 
				        // represents the map on the page.

    var m_iToolMode;    // Indicates the currently selected tool, where
				        //				+ zoom in  = 1
				        //				+ recenter = 2	

	var m_sClientBrowserType;	// Possible values: "IE", "Netscape"
	var m_sClientPlatform;		// Possible values: "Windows","Mac"
    
    		           // The array that stores the level extent widths				  
	var m_ExtentWidths = new Array(100, 200);
	

	var m_lTimerID = 1; // used only for hiding the "Wait" image for Netscape 6.x

	// Determine browser type and platform.

	if (navigator.appName.indexOf("Netscape")>=0) {
		m_sClientBrowserType = 'Netscape';
	} else if (navigator.appName.indexOf('Microsoft') >=0) {
		m_sClientBrowserType = 'IE';
	} else {
		window.location = "unsupported.htm";
	}

	if (navigator.userAgent.indexOf("Win") >= 0) {
		m_sClientPlatform = 'Windows';
	} else if (navigator.platform.indexOf("Mac") >= 0) {
		m_sClientPlatform = 'Mac';
	} else {
		window.location = "unsupported.htm";
	}
    

// *******************************************************************
// *********************** STARTUP FUNCTION **************************
// *******************************************************************


function startUp(lang) {

// Purpose: Fires when the page first loads.  


	// Find the HTML tags that will be used throughout the
	// page.
	m_radZoomIn = document.getElementById("radZoomIn");
	m_radRecenter = document.getElementById("radRecenter");
	m_txtXCoord = document.getElementById("txtXCoord");
	m_txtYCoord = document.getElementById("txtYCoord");
	m_imgMapCanvas = document.getElementById("imgMapCanvas");
    m_imgLoading = document.getElementById("imgLoading");
	m_divZoomBox = document.getElementById("divZoomBox");
	m_divMapBorder = document.getElementById("divMapBorder");
  	m_divNorth = document.getElementById("divNorth");
  	m_divSouth = document.getElementById("divSouth");
  	m_divEast = document.getElementById("divEast");
  	m_divWest = document.getElementById("divWest");
  	m_divNorthEast = document.getElementById("divNorthEast");
  	m_divSouthEast = document.getElementById("divSouthEast");
  	m_divNorthWest = document.getElementById("divNorthWest");
  	m_divSouthWest = document.getElementById("divSouthWest");
  	m_divMapTools = document.getElementById("divMapTools");
	m_hvMinX = document.getElementById("hvMinX");
	m_hvMinY = document.getElementById("hvMinY");
	m_hvMaxX = document.getElementById("hvMaxX");
	m_hvMaxY = document.getElementById("hvMaxY");
	m_hvMapPage = document.getElementById("hvMapPage");
	DispLang = lang.toLowerCase()

	// Create a map coordinate manager.
	m_mapViewer = new map(m_imgMapCanvas.offsetLeft,
  						  m_imgMapCanvas.offsetTop,
						  m_imgMapCanvas.width,	
						  m_imgMapCanvas.height,
						  m_ExtentWidths,
						  new rect(m_hvMinX.value, m_hvMinY.value, m_hvMaxX.value, m_hvMaxY.value)
						  );

	// Create a zoom box.
    m_zbxZoom = new zoomBox(m_divZoomBox);
   
    //Orient other page elements - Map Border, Map Tools, Loading Image, Border Navigation.
    posLoadingImage();
    posBorder();
    posBorderNavigation(); //must be called BEFORE posTools()
    posTools();  //must be called AFTER posBorderNavigation()  

	// Initialize the tool mode. 
	handleToolClick(returnActiveTool());
		
	// Initialize the X,Y coordinate display.
	m_txtXCoord.value = "X:"
	m_txtYCoord.value = "Y:"

	// Assign custom event handlers to mousedown, mousemove, 
	// and mouseup.
	if (m_sClientBrowserType == 'Netscape') {
		document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP);
	}
	
	document.oncontextmenu = nocontextmenu;
	document.onmousedown = handleMouseDown;
	document.onmousemove = handleMouseMove;
	document.onmouseup = handleMouseUp;
	
	//if (m_sClientBrowserType == 'IE') {
		// Assign an event handler to the m_imgMapCanvas onload event.
		m_imgMapCanvas.onload = hideWaitImage;
	//}	
	
	//Request a map.
	submit();
}

// *******************************************************************
// *********************** EVENT HANDLERS  ***************************
// *******************************************************************
function nocontextmenu(evt) {
	if (m_sClientBrowserType == 'Netscape') {
		evt.cancelBubble = true, evt.returnValue = false;
	}
	else
	{
		event.cancelBubble = true, event.returnValue = false;
	}
	return false;
} 

function handleMouseDown(evt) {
// Purpose:  Any time a mouse button is depressed, this function
//           is given the opportunity to respond to the event.
//
//           For the purposes of the map, we are only interested
//           in the click if it happened within the map area, so 
//           an initial check kicks us out of the function if the
//           click has not occurred in the map area.
//
//           If the click is over the map, then -- depending on
//           the tool mode -- either the zoombox must be started
//           or a recenter must be performed.

	// Get event coordinates by browser-specific means.
	var eventX;
	var eventY;

	if ((m_sClientBrowserType == 'Netscape')&&(evt.which == 1)) {
		eventX = evt.clientX;
		eventY = evt.clientY;
	} 
	else if (event.button == 1) {
		eventX = event.clientX;
		eventY = event.clientY;
	}
	else return false;	
	
	// Check to see if click is over map
	if (!(m_mapViewer.isEventOverMap(eventX, eventY))) {	
		return;
	} 
	//alert(m_iToolMode);
	switch(m_iToolMode) {
		case 1: // zoom in mode
			if ((m_sClientBrowserType == 'IE') && (m_sClientPlatform == 'Windows')) {
	  		// For IE, a call to "setCapture" is made to ensure that
				// new IE dragging events do not interfere with capturing 
				// the mousemove events -- effectively, this turns off 
				// drag and drop events temporarily.
				m_imgMapCanvas.setCapture(); 
			}
			m_zbxZoom.show();
			m_zbxZoom.start(eventX, eventY);
			break;
		case 2: // recenter mode
  			var ptUserClick = m_mapViewer.toMapPoint(eventX, eventY);
			m_mapViewer.recenter(ptUserClick);
			//Request a new map.
			submit();
			break;
		case 3: // zoom out mode
  			var ptUserClick = m_mapViewer.toMapPoint(eventX, eventY);
  			m_mapViewer.zoom(2); 	//m_mapViewer.setLevel(m_mapViewer.getLevel() + 1);
			m_mapViewer.recenter(ptUserClick);
			//Request a new map.
			submit();
			break;	
	}
}

function handleMouseMove(evt) {
// Purpose:  Any time the mouse moves anywhere on the document, 
//           this function is given the opportunity to respond to 
//           the event.

	// Get event coordinates by browser-specific means.

	var eventX;
	var eventY;

	if (m_sClientBrowserType == 'Netscape') {
		eventX = evt.clientX;
		eventY = evt.clientY;
	} else {
		eventX = event.clientX;
		eventY = event.clientY;
	}

    // If the mouse isn't currently over the map, we
    // have nothing to do.
	if (!(m_mapViewer.isEventOverMap(eventX, eventY))) {	
		return;
	} 		
	reportCoords(m_mapViewer.toMapPoint(eventX, eventY)); // update the textbox to reflect
																																												 // the current coordinates.
    // If the current tool is zoom in and a zoombox is in progress, update
    // the zoom box.
    if (m_iToolMode == 1) {
		if (m_zbxZoom.isInProgress) {
			m_zbxZoom.update(eventX, eventY);
		}
	}
}

function handleMouseUp(evt) {
	// Purpose:  Any time a mouse button is released, this function is 
	//					 given the opportunity to respond to the event.

		// If a ZoomBox is not in progress, we've got nothing
		// to do.
if (((m_sClientBrowserType == 'Netscape')&&(evt.which==1)) || (event.button == 1))
{	
	if (!(m_iToolMode == 1)) {
		return;
	}
	if (!(m_zbxZoom.isInProgress())) {
		return;
	}
		// Release the capture that was set in the mousedown
		// handler (again, this is something that we have to do because
		// of drag events in IE).
	if ((m_sClientBrowserType == 'IE') && (m_sClientPlatform == 'Windows')) {
		document.releaseCapture();
	}

		// Stop the current effect.
	m_zbxZoom.stop();

		// If the width of the zoom box is less than five pixels,
		// treat is as a single click and zoom in one map level.
		// Otherwise, set the extent to the zoom box.
	if ((Math.abs(m_zbxZoom.getStartX() - m_zbxZoom.getEndX()) < 5) && (Math.abs(m_zbxZoom.getStartY() - m_zbxZoom.getEndY()) < 5))  {	
		var ptUserClick = m_mapViewer.toMapPoint(m_zbxZoom.getStartX(), m_zbxZoom.getStartY());
		if (m_mapViewer.getLevel() == 1) {   //if we reach the minimum zoom level, zoom a fixed amount.
		  m_mapViewer.zoom(0.5);
		} 
		else {
			m_mapViewer.setLevel(m_mapViewer.getLevel() - 1);
		}
		m_mapViewer.recenter(ptUserClick);
     }
     else {
  		borderWidth = 0;
  		if (m_sClientBrowserType == 'Netscape') {
			borderWidth = 1; // 2 times border width
		}
		var ptStart = m_mapViewer.toMapPoint(m_zbxZoom.getStartX()+borderWidth, m_zbxZoom.getStartY()+borderWidth);
		var ptEnd   = m_mapViewer.toMapPoint(m_zbxZoom.getEndX()+borderWidth, m_zbxZoom.getEndY()+borderWidth);
		m_mapViewer.setExtent(new rect(ptStart.x,ptStart.y,ptEnd.x,ptEnd.y));
	}
	//Request a new map.
	submit();
}
else return false;
}

function handleToolClick(iToolMode) {
	switch(iToolMode) {
		case 1:
			// zoom in mode
			m_imgMapCanvas.style.cursor = "crosshair";
			break;
		case 2:
			// pan mode
			m_imgMapCanvas.style.cursor = "hand";
			break;
		case 3:
			// Zoom out mode
			m_imgMapCanvas.style.cursor = "hand";
			break;
	}
	m_iToolMode = iToolMode;
}

//not useful for current project
/*
function ResizeMap(sSize) {

    if (((sSize == 'SMALL') && (m_imgMapCanvas.className == 'SmallMap')) || 
        ((sSize == 'LARGE') && (m_imgMapCanvas.className == 'LargeMap'))) {
        return;
    }
    
    switch(sSize) { 
        case 'SMALL':
        m_imgMapCanvas.className = 'SmallMap';
        break;
        case 'LARGE':
        m_imgMapCanvas.className = 'LargeMap';
        break;
        default: 
        return; // invalid sSize value
    }

        // Create a new map coordinate manager.
    m_mapViewer = new map(m_imgMapCanvas.offsetLeft,
  				    m_imgMapCanvas.offsetTop,
				    m_imgMapCanvas.width,	
				    m_imgMapCanvas.height,
					m_ExtentWidths,
				    m_mapViewer.getExtent()
				    );


        //Orient other page elements - MapSizeImage, Map Border, Map Tools, Loading Image.
    switch(sSize) { 
        case 'SMALL':
        updateImgMapSize('LARGE');
        break;
        case 'LARGE':
        updateImgMapSize('SMALL');
        break;
    }
    
    posLoadingImage();
    posBorder();
    posBorderNavigation(); //must be called BEFORE posTools()
    posTools();  //must be called AFTER posBorderNavigation()

    submit();
}

function updateImgMapSize(sSize) {
    m_imgMapSize = document.getElementById("imgMapSize");
    switch(sSize) { 
        case 'SMALL':
            m_imgMapSize.name = 'SMALL';
            m_imgMapSize.src= 'images/smallmap.gif';
        break;
        case 'LARGE':
            m_imgMapSize.name = 'LARGE';
            m_imgMapSize.src= 'images/largemap.gif';
        break;
    }
}

function updateZoomLevel(inLevel) {
        var nLevels = m_ExtentWidths.length + 1;
		for (i=1;i<nLevels+1;i++) {
			document.getElementById('imgZoomLevel' + i).src = 'images/tick.gif';
			if (i==inLevel) {
			    document.getElementById('imgZoomLevel' + i).src = 'images/tick_selected.gif';
			}
		}
}
*/

function ZoomToLevel(iLevel) {   
    //abedon
    //alert(iLevel);
    
	m_mapViewer.setLevel(iLevel);
    //Request a new map.
    submit();
}

// *******************************************************************
// ********************** HELPER FUNCTIONS  **************************
// *******************************************************************

function hideWaitImage() {
		//alert(m_imgMapCanvas.src)
    m_zbxZoom.hide();
    m_imgLoading.style.visibility = 'hidden';
}

function hideWaitImageForNetscape6() {
	if (m_imgMapCanvas.complete) {
		//alert(m_imgMapCanvas.src)
		clearInterval(m_lTimerID);
		m_divZoomBox.style.visibility = 'hidden';
		m_imgLoading.style.visibility = 'hidden';
	}
}

function moveEast() {
    m_mapViewer.moveEast();
    submit();
}

function moveNorth() {
    m_mapViewer.moveNorth();
    submit();
}

function moveSouth() {
    m_mapViewer.moveSouth();
    submit();
}

function moveWest() {
    m_mapViewer.moveWest();
    submit();
}

function moveNorthEast() {
    m_mapViewer.moveNorthEast();
    submit();
}

function moveNorthWest() {
    m_mapViewer.moveNorthWest();
    submit();
}

function moveSouthEast() {
    m_mapViewer.moveSouthEast();
    submit();
}

function moveSouthWest() {
    m_mapViewer.moveSouthWest();
    submit();
}

function persistExtent() {
	m_hvMinX.value = m_mapViewer.getExtent().getLeft();
	m_hvMinY.value = m_mapViewer.getExtent().getBottom();
	m_hvMaxX.value = m_mapViewer.getExtent().getRight();
	m_hvMaxY.value = m_mapViewer.getExtent().getTop();
}

function posBorder() {

    if (m_sClientBrowserType == 'Netscape') { 
		m_divMapBorder.style.left = m_imgMapCanvas.offsetLeft - parseInt(m_divMapBorder.style.borderWidth.replace('px',''));
		m_divMapBorder.style.top = m_imgMapCanvas.offsetTop - parseInt(m_divMapBorder.style.borderWidth.replace('px',''));
	} else { // browser must be IE
		m_divMapBorder.style.left = m_imgMapCanvas.offsetLeft;
		m_divMapBorder.style.top = m_imgMapCanvas.offsetTop;
	}
		
    m_divMapBorder.style.width = m_imgMapCanvas.width;
    m_divMapBorder.style.height = m_imgMapCanvas.height;
    m_divMapBorder.style.visibility = "visible";

}

function posBorderNavigation() {

    var borderOffset = 0;    
    if (m_sClientBrowserType == 'Netscape') {
		borderOffset = parseInt(m_divMapBorder.style.borderWidth.replace('px','')) 
	}
   
    //align the NORTH DIV       
    m_divNorth.style.top = m_imgMapCanvas.offsetTop - (parseInt(m_divNorth.style.height.replace('px',''))) - borderOffset + 2;
    m_divNorth.style.left = m_imgMapCanvas.offsetLeft - 1;    

    //align the SOUTH DIV
    m_divSouth.style.top = m_imgMapCanvas.offsetTop + m_imgMapCanvas.height + borderOffset + 1;
    m_divSouth.style.left = m_imgMapCanvas.offsetLeft - 1;   
  
    //align the EAST DIV       
    m_divEast.style.top = m_imgMapCanvas.offsetTop - 1;
    m_divEast.style.left = m_imgMapCanvas.offsetLeft + m_imgMapCanvas.width + borderOffset + 1;    

    //align the WEST DIV       
    m_divWest.style.top = m_imgMapCanvas.offsetTop - 1;
    m_divWest.style.left = m_imgMapCanvas.offsetLeft - (parseInt(m_divWest.style.width.replace('px',''))) - borderOffset - 1;   
}

function posLoadingImage() {
    m_imgLoading.style.top = (parseInt(m_imgMapCanvas.style.top.replace('px','')) + (m_imgMapCanvas.height / 2) - (m_imgLoading.height / 2) );
    m_imgLoading.style.left = (parseInt(m_imgMapCanvas.style.left.replace('px','')) + (m_imgMapCanvas.width / 2) - (m_imgLoading.width / 2) );
}

function posTools() {
    m_divMapTools.style.top = parseInt(m_divSouth.style.top.replace('px','')) + parseInt(m_divSouth.style.height.replace('px',''));
    m_divMapTools.style.width = m_imgMapCanvas.width;
}

function reportCoords(ptReport) {
	// Note: Use round() instead of toFixed(), since the latter isn't supported
    //       in IE Mac.
	m_txtXCoord.value = "X:"+(Math.round(ptReport.x*10000.0)/10000.0).toString();
	m_txtYCoord.value = "Y:"+(Math.round(ptReport.y*10000.0)/10000.0).toString();
}

function returnActiveTool() {
	if (m_radZoomIn.checked) {
		return 1;
	} else if(m_radRecenter.checked) {
		return 2;
	}
}

function showWaitImage() {
	m_imgLoading.style.visibility = 'visible';
}

function submit() {

	var sURL = m_hvMapPage.value+
			   "?LANG="+DispLang+
			   "&XMIN="+m_mapViewer.getExtent().getLeft()+
			   "&YMIN="+m_mapViewer.getExtent().getBottom()+
			   "&XMAX="+m_mapViewer.getExtent().getRight()+
			   "&YMAX="+m_mapViewer.getExtent().getTop()+
			   "&WIDTH="+m_mapViewer.getTagWidth()+
			   "&HEIGHT="+m_mapViewer.getTagHeight();

    //updateZoomLevel(m_mapViewer.getLevel());
    //alert(sURL);
	showWaitImage();

	if (navigator.userAgent.indexOf('Netscape6/6') > -1) {
	//if (m_sClientBrowserType == 'Netscape') {
		m_lTimerID = setInterval("hideWaitImageForNetscape6()",100);
	}
		
    m_imgMapCanvas.src = sURL + "&guid=" + newGuid();

    //Persist extent in Hidden variables
    persistExtent();	

}

function newGuid()
{
    var g = "{";
    for(var i = 0; i < 32; i++)
    g += Math.floor(Math.random() * 0xF).toString(0xF) + (i == 8 || i == 12 || i == 16 || i == 20 ? "-" : "")
    return g + "}";
}


///////Added by abedon  Dec 5, 2005
///////Modified by abedon Dec 9, 2005
function ShowProtocol(PID) {

	m_mapViewer.setLevel(3);
	var sURL = m_hvMapPage.value+
			   "?LANG="+DispLang+
			   "&XMIN="+m_mapViewer.getExtent().getLeft()+
			   "&YMIN="+m_mapViewer.getExtent().getBottom()+
			   "&XMAX="+m_mapViewer.getExtent().getRight()+
			   "&YMAX="+m_mapViewer.getExtent().getTop()+
			   "&WIDTH="+m_mapViewer.getTagWidth()+
			   "&HEIGHT="+m_mapViewer.getTagHeight()+ "&protocolid=" + PID;

    //updateZoomLevel(m_mapViewer.getLevel());
    //alert(sURL);
	showWaitImage();

	if (navigator.userAgent.indexOf('Netscape6/6') > -1) {
	//if (m_sClientBrowserType == 'Netscape') {		
		m_lTimerID = setInterval("hideWaitImageForNetscape6()",100);
	}

    m_imgMapCanvas.src = sURL + "&guid=" + newGuid();

   	//Persist extent in Hidden variables
    persistExtent();	

}

///////Added by abedon  Dec 7, 2005
///////Modified by abedon Dec 9, 2005
function ShowPeriod(period) {

	m_mapViewer.setLevel(3);
	var sURL = m_hvMapPage.value+
			   "?LANG="+DispLang+
			   "&XMIN="+m_mapViewer.getExtent().getLeft()+
			   "&YMIN="+m_mapViewer.getExtent().getBottom()+
			   "&XMAX="+m_mapViewer.getExtent().getRight()+
			   "&YMAX="+m_mapViewer.getExtent().getTop()+
			   "&WIDTH="+m_mapViewer.getTagWidth()+
			   "&HEIGHT="+m_mapViewer.getTagHeight()+ "&period=" + period + "&protocolid=0";

    //updateZoomLevel(m_mapViewer.getLevel());
    //alert(sURL);
	showWaitImage();

	if (navigator.userAgent.indexOf('Netscape6/6') > -1) {
	//if (m_sClientBrowserType == 'Netscape') {
		m_lTimerID = setInterval("hideWaitImageForNetscape6()",100);
	}
	
    m_imgMapCanvas.src = sURL + "&guid=" + newGuid();

   	//Persist extent in Hidden variables
	persistExtent();	

}

/*
///////Added by abedon  Apr 18, 2006
function GetLangCode() {
  var lct="en";
  if (navigator.language) {
    lct=navigator.language.toLowerCase();
  } else if (navigator.userLanguage) {
    lct=navigator.userLanguage.toLowerCase();
  } else if (navigator.userAgent.indexOf("[")!=-1) {
    var debut=navigator.userAgent.indexOf("[");
    var fin=navigator.userAgent.indexOf("]");
    lct=navigator.userAgent.substring(debut+1, fin).toLowerCase();
  }
  return lct;
} 
*/