function __fetch (complexName) {

        var namedWindow = null;
        var complexFrameName = null;
        var element = null;

        var idx;

        // Named window?
        idx = complexName.indexOf ("::");
        if (idx >= 0) {
         
                namedWindow = complexName.substring (0, idx);
                complexFrameName = complexName.substring (idx + 2);
        } else
                complexFrameName = complexName;
                

        // Element?
        idx = complexFrameName.indexOf ("#");
        if (idx >= 0) {

                element = complexFrameName.substring (idx + 1);
                complexFrameName = complexFrameName.substring (0, idx);
        }

        var win = namedWindow ? _root ().getNamedWindow (namedWindow) : window;

        if (! win)
                return null;

        var frame = win;

        if (complexFrameName) {

                // Try recursively to obtain the proper frame according to the
                // possibly-nesting-defining complexFrameName stuff
                var hier = complexFrameName.split (':');
                for (var i = 0; i < hier.length; i ++) {
                        
                        frame = frame.frames [hier [i]];
                        if (! frame) {
                                if (_root ().document.body.signal){
                                        _root ().document.body.signal("WARNING: Couldn't retrieve frame [" + complexFrameName + 
                                                                      "]; stumbled upon part [" + newName + "]");
                                }
                                return false;
                        }
                }
        }

        if (! element)
                return frame;
        else
                return frame.document.getElementById (element);
}


function cb_reloadFrame (producer, properties, htmlElement, param) {

        if(!htmlElement){
                throw new Error("There is no HTML element to reload. Is the old tag being used?");
        }

        var frame = __fetch (htmlElement);
        if (frame)
                frame.location.reload();
}



function cb_reloadMapView (producer, properties, view, contextName) {

        var getGeometryUrl;

        if (contextName.indexOf ("describe") >= 0) {

                alert ("reloadMapView received as parameter the URL for fetching the geometry, but this is deprecated: better use the ContextBean's name.");
                getGeometryUrl = contextName;
        } else
                getGeometryUrl = _root ().getWebappBaseUrl () + "//describeContextBeanStructure.do?target=" + escape (contextName);


        if(typeof(view) == "string"){
                
                var name = view.indexOf ("#") < 0 ? ("#" + view) : view;
                view = __fetch (name);
        }

        if (! view) {
                
                alert ("cb_reloadMapView couldn't fetch view with complex name: " + view);
                return null;
        }


        if (! window.getHTTPObject) {

                if (_root ().document.body.signal)
                        _root ().document.body.signal 
                                ('WARNING: getHTTPObject is not defined. Cannot reload map navigator geometry. Is common.js used?');
                return null;
        }

        if(! view){
                if (_root ().document.body.signal)
                        _root ().document.body.signal 
                                ('WARNING: view is not defined. Cannot reload map image. But why?');
                return null;
        }

        var iHolder    = view.mouseMapProcessor.getImageHolder ();

        if (! iHolder) {

                alert ('Couldn\'t find element imageHolder4' + view.id + '. Can\'t refresh map view ' + view.id);
                return;
        }
    
        withContextGeometry 
                (getGeometryUrl, 
                 function (box, scale, zoomFactor, imageWidth, imageHeight, layerInfos, srs, srsEpsgId) {

                         var parent;
                         view.leftToLoad = 0;
                         
                         // The layerInfos come in the wrong order
                         layerInfos.reverse();

                         // =======================================
                         // Update client-side geometry information
                         // =======================================
                         view.mouseMapProcessor.reset ();
                         var envelopeChanged = false;
                     	 if(!view.envelope || (!view.envelope.equals(box))){
	             			 view.envelope = box;
	             			 envelopeChanged = true;
	             		 }
                         view.scale = scale;
                         view.zoomInFactor = zoomFactor;
                         view.imageWidth = imageWidth;
                         view.imageHeight = imageHeight;
                         view.srs = srs;
                         view.srsEpsgId = srsEpsgId;
                         view.processDates();
                                    
                         // All map elements must be updated
                         if (envelopeChanged && _root().getMapElementListeningOnView) {
                                            
                                 var elts = _root ().getMapElementListeningOnView (view);
                                 for (var i = 0; i < elts.length; i ++) {
                                                    
                                         var el = elts [i];
                                         if (el && el.layOnView)
                                                 el.layOnView ();
                                 }
                         }                    

                         // destroy the ones we must not keep
                         for (var ldiIdx = 0; ldiIdx < view.layerInfos.length; ldiIdx ++) {

                                 var foundLayer = false;
                                 var currentLayerInfo = view.layerInfos [ldiIdx];

                                 for (var keptIdx = 0; keptIdx < layerInfos.length; keptIdx ++) {

                                         if (layerInfos [keptIdx].layerId == currentLayerInfo.layerId) {
                                                 
                                                 foundLayer = true;
                                                 break;
                                         }
                                 }

                                 if (! foundLayer) {

                                         view.deleteLayerInfo (currentLayerInfo);
                                 }
                         }

                         view.mouseMapProcessor.startLoading ();

                         for (var keptIdx = 0; keptIdx < layerInfos.length; keptIdx ++) {

                                 var currentLayerInfo = layerInfos [keptIdx];
                                 currentLayerInfo.setView(view);
                                 var image = currentLayerInfo.layer;
                    
                                 view.leftToLoad ++;

                                 currentLayerInfo.initializeImage ();

                                 currentLayerInfo.refreshImage ();
                         }

                         view.setLayerInfos(layerInfos);
                 });
}


function cb_displayGetFeatureResults (foo, bar, baz, url) {

        window.open (url, 'GetFeatureResults', 'width=800,height=600,toolbar=no,menubar=no');
}


function withContextGeometry (getterUrl, body) {

        var httpObj = window.getHTTPObject ();
        if (httpObj == null) {
        
                if (top.document.body.signal)
                        top.document.body.signal (new Array ("Browser", "Couldn't create an XmlHTTPRequest"));
                return null;
        }

        var results = new Array ();
        var getterFullUrl = getterUrl + '&outputType=wkt&rand=' + Math.random() +  '&time=' + new Date ().getTime ();

        httpObj.onreadystatechange = function () {

                if (httpObj.readyState == 4) {
        
                        if (httpObj.status == 200) {

                                var layerInfos = [];

                                var text = httpObj.responseText;
                                //alert ('XmlHTTPRequest status is ' + httpObj.status);
                                //alert ('XmlHTTPRequest text is ' + text);
                                if (text != null) {
                                        
                                        var minx, miny, maxx, maxy, scale, ziFactor, imageWidth, imageHeight, srs, srsEpsgId;

                                        var interpretePair = function (name, value) {
                                                
                                                if (name.indexOf ('minx') > -1) minx = parseFloat (value);
                                                else if (name.indexOf ('miny') > -1) miny = parseFloat (value);
                                                else if (name.indexOf ('maxx') > -1) maxx = parseFloat (value);
                                                else if (name.indexOf ('maxy') > -1) maxy = parseFloat (value); 
                                                else if (name.indexOf ('scale') > -1) scale = parseFloat (value);
                                                else if (name.indexOf ('zoomInFactor') > -1) ziFactor = parseFloat (value);
                                                else if (name.indexOf ('imageWidth') > -1) imageWidth = parseInt (value);
                                                else if (name.indexOf ('imageHeight') > -1) imageHeight = parseInt (value);
                                                else if (name.indexOf ('srsEpsgId') > -1) srsEpsgId = parseInt (value);
                                                else if (name.indexOf ('srs') > -1) srs = value;
                                                else if (name.indexOf ('layer id') > -1) {
                                                		var currentLayerInfo = createLayerInfo();
                                                        currentLayerInfo.layerId = value;
                                                        layerInfos [layerInfos.length] = currentLayerInfo;
                                                }
                                                else if (name.indexOf ('layer url') > -1) {
                                                        var curLinfo = layerInfos [layerInfos.length - 1];
                                                        curLinfo ["url"] = value;
                                                }
                                        };

                                        if (text.indexOf ("infos on") > -1) {
                                                // Complex version
                                                var lines = text.split ("\n");
                                                for (var lIdx = 0; lIdx < lines.length; lIdx ++) {

                                                        var line = lines [lIdx];
                                                        var firstEq = line.indexOf ("=");
                                                        if (firstEq > -1) {

                                                                interpretePair (line.substring (0, firstEq),
                                                                                line.substring (firstEq + 1));
                                                        }
                                                }

                                        } else {
                                                var tokens = text.split (',');
                                                for (var i = 0; i < tokens.length; i ++) {
                                                        var token = tokens [i];
                                                        var parts = token.split ('=');
                                                        interpretePair (parts [0], parts [1]);
                                                }
                                        }
                                        
                                        if (minx == null || miny  == null || maxx     == null || 
                                            maxy == null || scale == null || ziFactor == null ||
                                            imageWidth == null || imageHeight == null) {
                                                
                                                if (top.document.body.signal)
                                                        top.document.body.signal 
                                                                (new Array ("Browser", 
                                                                            'Not all four of coordinates, scale, zoomInFactor, or image width and height could be read: ' + 
                                                                            minx + ',' + miny + ',' + maxx + ',' + maxy + "; " + scale + "; " + ziFactor + "; " + imageWidth + ", " + imageHeight));
                                                
                                                return body (null, null, null, null, null, null);
                                        } else {
                                        
                                                return body (new Box (minx, miny, maxx, maxy),
                                                             scale, 
                                                             ziFactor, 
                                                             imageWidth, 
                                                             imageHeight,
                                                             layerInfos,
                                                             srs,
                                                             srsEpsgId);
                                        }
                                }
                        } else
                                alert ("Couldn't retrieve context geometry using URL " + getterFullUrl + ", got status " + httpObj.status + " from server. Returned text is: " + httpObj.statusText);
                }
        };

        httpObj.open ("GET", getterFullUrl, true);
        httpObj.setRequestHeader("Content-Length",0); // Needed for proxies
//        httpObj.open ("POST", getterFullUrl, false);
        httpObj.send (null);
}