// ----------------------------------------------------------------
//     				   ArcWeb Services Site Starter Client
// ----------------------------------------------------------------
// Purpose:  Manages "active" navigation functionality.  
//           + Manages map coordinate logic.
//           + Uses DHTML to produce rubber-banding effect 
//             when user zooms in or out.  This is handled
//             by the zoomBox class.
// ----------------------------------------------------------------
// Notes:		
// -------------------------------------------------------------------

// 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_imgZoomIn;
    var m_imgZoomOut;
    var m_imgPan;
    var m_imgIdentify;
    var m_imgSelRect;
    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	hidMinX;
    var	hidMinY;
    var	hidMaxX;
    var	hidMaxY;
	var m_hvMapPage;

	// 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	
				        //				+ zoom out = 3
				        //				+ Select by point = 4  (REMOVED FROM MAP)
				        //				+ select by poly = 5

	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(0.005, 0.015, 0.035, 0.1, 0.3, 0.75, 2, 6, 10, 30, 110);

	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";
	}
	
var theForm;    
    
function handleLoading() {
	// Called on initial load AND after every postback.
	
	theForm = document.Form1;
	
	startUp();
	
	//if (theForm.hidAction.value == "startup)
		
	//else
		// handle postback - map coordinates etc.
}

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

function startUp() {

// Purpose: Fires when the page first loads.  
		// Find the HTML tags that will be used throughout the
		// page.
	m_imgZoomIn = document.getElementById("imgZoomIn"); //("radZoomIn");
	m_imgZoomOut = document.getElementById("imgZoomOut");
	m_imgPan = document.getElementById("imgPan"); //("radRecenter");
	m_imgIdentify = document.getElementById("imgIdentify");
	m_imgSelRect = document.getElementById("imgSelRect");
	m_txtXCoord = document.getElementById("txtXCoord");
	m_txtYCoord = document.getElementById("txtYCoord");
	m_imgMapCanvas = document.getElementById("imgMap");
    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_divMapTools = document.getElementById("divMapTools");
  	*/
	hidMinX = document.getElementById("hidMinX");
	hidMinY = document.getElementById("hidMinY");
	hidMaxX = document.getElementById("hidMaxX");
	hidMaxY = document.getElementById("hidMaxY");
	//m_hvMapPage = document.getElementById("hvMapPage");
	
	// Create a map coordinate manager.
	//alert("Hidden values: " + hidMinX.value);
	var mapRect = new rect(hidMinX.value, hidMinY.value, hidMaxX.value, hidMaxY.value);
	m_mapViewer = new map(m_imgMapCanvas.offsetLeft,
  						  m_imgMapCanvas.offsetTop,
						  m_imgMapCanvas.width,	
						  m_imgMapCanvas.height,
						  m_ExtentWidths,
						  mapRect
						  );

		// 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 to zoomin
	m_iToolMode = document.getElementById("hidTool").value;
	if (parseInt(m_iToolMode) == NaN) {
	   m_iToolMode = 1;
	  }
	handleToolClick(parseInt(m_iToolMode));
	//handleToolClick(1);	
	
	    // 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.onmousedown = handleMouseDown;
	document.onmousemove = handleMouseMove;
	document.onmouseup = handleMouseUp;
	
	// Assign an event handler to the m_imgMapCanvas onload event.
	m_imgMapCanvas.onload = hideWaitImage;
	
	    //Request a map.
	//submit();
}

// *******************************************************************
// *********************** EVENT HANDLERS  ***************************
// *******************************************************************

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') {
		eventX = evt.clientX;
		eventY = evt.clientY;
	} else {
		eventX = event.clientX;
		eventY = event.clientY;
	}

	// Check to see if click is over map
	if (!(m_mapViewer.isEventOverMap(eventX, eventY))) {	
		return;
	} 
	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
			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 4: // Identify / Select by Point mode
		  	var ptUserClick = m_mapViewer.toMapPoint(eventX, eventY);
		  	 // Populate click x and y in hidden form fields for submit
		  	 borderWidth = 0;
  			if (m_sClientBrowserType == 'Netscape') {
				borderWidth = 4; // 2 times border width
			}
		  	 var ptClick = m_mapViewer.toMapPoint(eventX+borderWidth, eventY+borderWidth);
		  	 document.getElementById("hidClickX").value = ptClick.x;
		  	 document.getElementById("hidClickY").value = ptClick.y;
		  	 //Request a new map.
			submit();
			break;
		case 5: // Select by Poly 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;
	}
}

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, zoom out or select by poly and a
    // zoombox is in progress, update the zoom box.
    if ((m_iToolMode == 1) || (m_iToolMode == 3) || (m_iToolMode == 5)) {
		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_iToolMode == 1)) && (!(m_iToolMode == 3)) && (!(m_iToolMode == 5))) {
		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.
		  
		  
		  //if (m_iToolMode == 1) {
			// Zoom in single-click
			//m_mapViewer.zoom(0.5);
		  //} else {
			// Zoom out single-click
			//m_mapViewer.zoom(2.0);  // BB: number > 1 zooms out
		  //}
		  // Added case statements to handle single click with rectangle tool
		  switch (m_iToolMode){
			case 1:
				// Zoom in single-click
				m_mapViewer.zoom(0.5);
				break;
			case 3:
				// Zoom out single-click
				m_mapViewer.zoom(2.0);  // BB: number > 1 zooms out
				break;
			case 5:
				break;
			default:
				break;
		  }
		// } else {
		//	m_mapViewer.setLevel(m_mapViewer.getLevel() - 1);
     //}
     
		//m_mapViewer.recenter(ptUserClick);
		// Added if statement to check against single click with select by rect tool
		if ((m_iToolMode == 1) || (m_iToolMode == 3)) {
			m_mapViewer.recenter(ptUserClick);
		}
		
    } else {
  		borderWidth = 0;
  		if (m_sClientBrowserType == 'Netscape') {
			borderWidth = 4; // 2 times border width
		}
		if (m_iToolMode == 1 || m_iToolMode == 3 || m_iToolMode == 5) {
			//alert ('Zooming in');
			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);
			
			if (m_iToolMode == 3) {	
				// Use zoom box drawn by user
				// Zoom out based on distance per pixel of 
				//   current envelope compared to user-drawn envelope
				var currExt = m_mapViewer.getExtent();
				var distPerPixelX = Math.abs((currExt.getWidth()) / (ptEnd.x - ptStart.x));
				var distPerPixelY = Math.abs((currExt.getHeight()) / (ptEnd.y - ptStart.y));
				var distPerPixel = (distPerPixelX > distPerPixelY) ? distPerPixelY : distPerPixelX;

				var newHalfX = distPerPixel * currExt.getWidth()/2;
				var newHalfY = distPerPixel * currExt.getHeight()/2;
				
				var newCenterX = (ptEnd.x + ptStart.x)/2;
				var newCenterY = (ptEnd.y + ptStart.y)/2;
				
				ptStart.x = newCenterX - newHalfX;
				ptStart.y = newCenterY - newHalfY;
				ptEnd.x = newCenterX + newHalfX;
				ptEnd.y = newCenterY + newHalfY;
			
				m_mapViewer.setExtent(new rect(ptStart.x,ptStart.y,ptEnd.x,ptEnd.y));
			}
			
			if (m_iToolMode == 1) {
				// Do Zoom In by Setting new Extent
				m_mapViewer.setExtent(new rect(ptStart.x,ptStart.y,ptEnd.x,ptEnd.y));
			}
			
			//m_mapViewer.setExtent(new rect(ptStart.x,ptStart.y,ptEnd.x,ptEnd.y));
			
			if (m_iToolMode == 5) {
				// Set hidden search extent values and submit the form				
				document.getElementById("hidSMinX").value = ptStart.x;
				document.getElementById("hidSMinY").value = ptStart.y;
				document.getElementById("hidSMaxX").value = ptEnd.x;
				document.getElementById("hidSMaxY").value = ptEnd.y;
			}
			
		}
	
	}
	//Request a new map.
	submit();

}

function handleToolClick(iToolMode) {
	m_imgZoomIn.src = "images/map/zoomin_1.gif";
	m_imgZoomOut.src = "images/map/zoomout_1.gif";
	m_imgPan.src = "images/map/pan_1.gif";
	if (m_imgIdentify != null) {
		m_imgIdentify.src = "images/map/select_point_1.gif";
	}
	if (m_imgSelRect != null) {
		m_imgSelRect.src = "images/map/select_rect_1.gif";
	}
		
	switch(iToolMode) {
		case 1:
			// zoom in mode
			m_imgMapCanvas.style.cursor = "crosshair";
			m_imgZoomIn.src = "images/map/zoomin_2.gif";
			break;
		case 2:
			// pan mode
			m_imgMapCanvas.style.cursor = "hand";
			m_imgPan.src = "images/map/pan_2.gif";
			break;
		case 3:
			// zoom out mode
			m_imgMapCanvas.style.cursor = "crosshair";
			m_imgZoomOut.src = "images/map/zoomout_2.gif";
			break;
		case 4:
			// identify / Select by Point mode
			m_imgMapCanvas.style.cursor = "default";
			m_imgIdentify.src = "images/map/select_point_2.gif";
			break;
		case 5:
			// Select by Poly mode
			m_imgMapCanvas.style.cursor = "default";
			m_imgSelRect.src = "images/map/select_rect_2.gif";
			break;
	}
	m_iToolMode = iToolMode;
	document.getElementById("hidTool").value = iToolMode;
}

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

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

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

function hideWaitImageForNetscape6() {
	if (m_imgMapCanvas.complete) {
		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 persistExtent() {

	//Persist old extent
	theForm.hidPEMinX.value = theForm.hidMinX.value;
	theForm.hidPEMinY.value = theForm.hidMinY.value;
	theForm.hidPEMaxX.value = theForm.hidMaxX.value;
	theForm.hidPEMaxY.value = theForm.hidMaxY.value;

	//Capture new extent
	theForm.hidMinX.value = m_mapViewer.getExtent().getLeft();
	theForm.hidMinY.value = m_mapViewer.getExtent().getBottom();
	theForm.hidMaxX.value = m_mapViewer.getExtent().getRight();
	theForm.hidMaxY.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;
    m_divNorth.style.left = m_imgMapCanvas.offsetLeft + (m_imgMapCanvas.width / 2)- (parseInt(m_divNorth.style.width.replace('px','')) / 2);    

         //align the SOUTH DIV
    m_divSouth.style.top = m_imgMapCanvas.offsetTop + m_imgMapCanvas.height + borderOffset;
    m_divSouth.style.left = m_imgMapCanvas.offsetLeft + (m_imgMapCanvas.width / 2)- (parseInt(m_divSouth.style.width.replace('px','')) / 2);   
  
         //align the EAST DIV       
    m_divEast.style.top = m_imgMapCanvas.offsetTop + ((m_imgMapCanvas.height / 2) - (parseInt(m_divEast.style.height.replace('px','')) / 2));
    m_divEast.style.left = m_imgMapCanvas.offsetLeft + m_imgMapCanvas.width + borderOffset;    

         //align the WEST DIV       
    m_divWest.style.top = m_imgMapCanvas.offsetTop + ((m_imgMapCanvas.height / 2) - (parseInt(m_divWest.style.height.replace('px','')) / 2));
    m_divWest.style.left = m_imgMapCanvas.offsetLeft - (parseInt(m_divWest.style.width.replace('px',''))) - borderOffset;   
}

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_imgZoomIn.src = "images/zoomin_2.gif") {
		return 1;
	} else if(m_imgPan.src = "images/pan_2.gif") {
		return 2;
	}
}

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

function submit() {

	/*var sURL = m_hvMapPage.value+
		         "?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());
	*/
	showWaitImage();

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

	//m_imgMapCanvas.src = sURL;

	//Persist extent in Hidden variables
	persistExtent();
	theForm.hidAction.value = "makeMap";
	theForm.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;
		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';
			}
		}
}