xref: /plugin/openlayersmap/script.js (revision 0002702d04920e928bb1cb443c85ffaa6c3d8800)
1/*
2 * Copyright (c) 2008-2011 Mark C. Prins <mc.prins@gmail.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17/**
18 * @fileoverview Javascript voor OpenLayers plugin.
19 *
20 * @requires {lib/OpenLayers.js} or other full openlayers build
21 * @author Mark C. Prins <mc.prins@gmail.com>
22 *
23 */
24
25/**
26 * Openlayers selectcontrol.
27 *
28 * @type {OpenLayers.Control.SelectFeature}
29 * @private
30 */
31var selectControl,
32/**
33 * Openlayers bounds used for managing the map extent.
34 *
35 * @type {OpenLayers.Bounds}
36 * @private
37 */
38extent;
39
40/**
41 * handle feature select event.
42 *
43 * @param {OpenLayers.Feature.Vector}
44 *            the selected feature
45 */
46function onFeatureSelect(feature) {
47	var selectedFeature = feature;
48	// 'this' is selectFeature control
49	var pPos = selectedFeature.geometry.getBounds().getCenterLonLat();
50	// != OpenLayers.Geometry.Point
51	if (selectedFeature.geometry.CLASS_NAME === "OpenLayers.Geometry.LineString") {
52		try {
53			// for lines make the popup show at the cursor position
54			pPos = feature.layer.map
55					.getLonLatFromViewPortPx(this.handlers.feature.evt.xy);
56		} catch (anErr) {
57			OpenLayers.Console
58					.warn("unable to get event position; reverting to boundingbox center.");
59			pPos = selectedFeature.geometry.getBounds().getCenterLonLat();
60		}
61	}
62
63	var pContent = "";
64	if (feature.data.rowId !== undefined) {
65		pContent += "<div style=''>" + feature.data.rowId + ": </div>";
66	}
67	if (feature.data.name !== undefined) {
68		pContent += "<div style=''>" + feature.data.name + "</div>";
69	}
70	if (feature.data.ele !== undefined) {
71		pContent += "<div style=''>elevation: " + feature.data.ele + "</div>";
72	}
73	if (feature.data.type !== undefined) {
74		pContent += "<div style=''>" + feature.data.type + "></div>";
75	}
76	if (feature.data.time !== undefined) {
77		pContent += "<div style=''>time: " + feature.data.time + "</div>";
78	}
79	if (feature.data.description !== undefined) {
80		pContent += "<div style=''>" + feature.data.description + "</div>";
81	}
82
83	if (pContent.length > 0) {
84		// only show when there is something to show...
85		var popup = new OpenLayers.Popup.FramedCloud("olPopup", pPos, null,
86				pContent, null, true, function() {
87					selectControl.unselect(selectedFeature);
88				});
89		feature.popup = popup;
90		feature.layer.map.addPopup(popup);
91	}
92}
93
94/**
95 * handle feature unselect event. remove & destroy the popup.
96 *
97 * @param {OpenLayers.Feature.Vector}
98 *            the un-selected feature
99 */
100function onFeatureUnselect(feature) {
101	if (feature.popup !== null) {
102		feature.layer.map.removePopup(feature.popup);
103		feature.popup.destroy();
104		feature.popup = null;
105	}
106}
107
108/** init. */
109function olInit() {
110	var _i = 0;
111	// hide the table(s) with POI by giving it a print only style
112	var tbls = getElementsByClass('olPOItableSpan', null, null);
113	for (_i = 0; _i < tbls.length; _i++) {
114		// tbls[i].style.display = 'none';
115		tbls[_i].className += ' olPrintOnly';
116	}
117	// hide the static map image(s) by giving it a print only style
118	var statImgs = getElementsByClass('olStaticMap', null, null);
119	for (_i = 0; _i < statImgs.length; _i++) {
120		// statImgs[i].style.display = 'none';
121		statImgs[_i].className += ' olPrintOnly';
122	}
123}
124
125/**
126 * creates a DocumentFragment to insert into the dom.
127 *
128 * @param mapid
129 *            id for the map div
130 * @param width
131 *            width for the map div
132 * @param height
133 *            height for the map div
134 * @returns a {DocumentFragment} element that can be injected into the dom
135 */
136function olCreateMaptag(mapid, width, height) {
137	var mEl = '<div id="'
138			+ mapid
139			+ '-olContainer" class="olContainer olWebOnly">'
140			+ '<div id="'
141			+ mapid
142			+ '-olToolbar" class="olToolbar"></div>'
143			+ '<div class="clearer"></div>'
144			+ '<div id="'
145			+ mapid
146			+ '" style="width:'
147			+ width
148			+ ';height:'
149			+ height
150			+ ';" class="olMap"></div>'
151			+ '<div id="'
152			+ mapid
153			+ '-olStatusBar" class="olStatusBarContainer">'
154			+ '<div id="'
155			+ mapid
156			+ '-statusbar-scale" class="olStatusBar olStatusBarScale">scale</div>'
157			+ '<div id="'
158			+ mapid
159			+ '-statusbar-link" class="olStatusBar olStatusBarPermalink"><a href="" id="'
160			+ mapid
161			+ '-statusbar-link-ref">map link</a></div>'
162			+ '<div id="'
163			+ mapid
164			+ '-statusbar-mouseposition" class="olStatusBar olStatusBarMouseposition"></div>'
165			+ '<div id="'
166			+ mapid
167			+ '-statusbar-projection" class="olStatusBar olStatusBarProjection">proj</div>'
168			+ '<div id="' + mapid
169			+ '-statusbar-text" class="olStatusBar olStatusBarText">txt</div>'
170			+ '</div>\n</div>',
171	// fragment
172	frag = document.createDocumentFragment(),
173	// temp node
174	temp = document.createElement('div');
175	temp.innerHTML = mEl;
176	while (temp.firstChild) {
177		frag.appendChild(temp.firstChild);
178	}
179	return frag;
180}
181
182/**
183 * create the map based on the params given.
184 *
185 * @param {Object}mapOpts
186 *            MapOptions hash {id:'olmap', width:500px, height:500px,
187 *            lat:6710200, lon:506500, zoom:13, toolbar:1, statusbar:1,
188 *            controls:1, poihoverstyle:1, baselyr:'', kmlfile:'', gpxfile:'',
189 *            summary:''}
190 * @param {Array}OLmapPOI
191 *            array with POI's [ {lat:6710300,lon:506000,txt:'instap
192 *            punt',angle:180,opacity:.9,img:'', rowId:n},... ]);
193 *
194 */
195function createMap(mapOpts, OLmapPOI) {
196	if (!olEnable) {
197		return;
198	}
199	var DocBase = DOKU_BASE;
200
201	OpenLayers.IMAGE_RELOAD_ATTEMPTS = 4;
202	OpenLayers.Util.onImageLoadErrorColor = 'pink';
203	OpenLayers.Util.onImageLoadError = function() {
204		/* transparent gif */
205		// IE 8 complains w/ stack overflow... this.src =
206		// "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=";
207		this.src = DocBase + "lib/plugins/openlayersmap/lib/img/blank.gif";
208	};
209
210	// OpenLayers.Layer.Vector.prototype.renderers = ["SVG2", "VML", "Canvas"];
211
212	// find map element location
213	var cleartag = document.getElementById(mapOpts.id + '-clearer');
214	if (cleartag === null) {
215		return;
216	}
217	// create map element and add to document
218	var fragment = olCreateMaptag(mapOpts.id, mapOpts.width, mapOpts.height);
219	cleartag.parentNode.insertBefore(fragment, cleartag);
220
221	/** dynamic map extent. */
222	var extent = new OpenLayers.Bounds(),
223
224	/** map. */
225	m = new OpenLayers.Map(mapOpts.id, {
226		projection : new OpenLayers.Projection('EPSG:900913'),
227		displayProjection : new OpenLayers.Projection('EPSG:4326'),
228		units : 'm',
229		maxResolution : 156543.0339,
230		maxExtent : new OpenLayers.Bounds(-20037508.34, -20037508.34,
231				20037508.34, 20037508.34),
232		numZoomLevels : 19,
233		// panDuration : 100,
234		controls : [ /* new OpenLayers.Control.LoadingPanel(), */
235		new OpenLayers.Control.KeyboardDefaults(),
236				new OpenLayers.Control.Navigation({
237					dragPanOptions : {
238						enableKinetic : true
239					}
240				}), new OpenLayers.Control.ScaleLine({
241					geodesic : true
242				}) ],
243		theme : null
244	});
245	if (osmEnable) {
246		/* add OSM map layers */
247		m.addLayer(new OpenLayers.Layer.OSM("OpenStreetMap"), {
248			transitionEffect : 'resize',
249			visibility : false
250		});
251
252		m
253				.addLayer(
254						new OpenLayers.Layer.OSM(
255								"t@h",
256								[
257										"http://a.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png",
258										"http://b.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png",
259										"http://c.tah.openstreetmap.org/Tiles/tile/${z}/${x}/${y}.png" ]),
260						{
261							transitionEffect : 'resize',
262							visibility : false
263						});
264
265		m
266				.addLayer(
267						new OpenLayers.Layer.OSM(
268								"cycle map",
269								[
270										// "http://andy.sandbox.cloudmade.com/tiles/cycle/${z}/${x}/${y}.png",
271										"http://a.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png",
272										"http://b.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png",
273										"http://c.tile.opencyclemap.org/cycle/${z}/${x}/${y}.png" ]),
274						{
275							transitionEffect : 'resize',
276							attribution : 'Data CC-By-SA <a href="http://openstreetmap.org/" target="_blank">OpenStreetMap</a>, '
277									+ 'Tiles <a href="http://opencyclemap.org/" target="_blank">OpenCycleMap</a>'
278									+ '<img src="http://opencyclemap.org/favicon.ico" heigth="16" width="16"/>',
279							visibility : false
280						});
281
282		m
283				.addLayer(new OpenLayers.Layer.OSM(
284						"cloudmade map",
285						"http://tile.cloudmade.com/2f59745a6b525b4ebdb100891d5b6711/3/256/${z}/${x}/${y}.png",
286						{
287							transitionEffect : 'resize',
288							visibility : false
289						}));
290
291		m.addLayer(new OpenLayers.Layer.OSM("hike and bike map",
292				"http://toolserver.org/tiles/hikebike/${z}/${x}/${y}.png", {
293					transitionEffect : 'resize',
294					visibility : false
295				}));
296	}
297	/*
298	 * add MapQuest map layers, see:
299	 * http://developer.mapquest.com/web/products/open/map
300	 */
301	if (mqEnable) {
302		m
303				.addLayer(new OpenLayers.Layer.OSM(
304						"mapquest road",
305						[
306								"http://otile1.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png",
307								"http://otile2.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png",
308								"http://otile3.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png",
309								"http://otile4.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png" ],
310						{
311							transitionEffect : 'resize',
312							attribution : 'Data CC-By-SA <a href="http://openstreetmap.org/" target="_blank">OpenStreetMap</a>, '
313									+ 'Tiles <a href="http://www.mapquest.com/" target="_blank">MapQuest</a>'
314									+ '<img src="http://developer.mapquest.com/content/osm/mq_logo.png" heigth="14" width="14" alt="logo"/>',
315							visibility : false
316						}));
317		// note that global coverage is provided at zoom levels 0-11. Zoom
318		// Levels 12+ are provided only in the United States (lower 48).
319		m
320				.addLayer(new OpenLayers.Layer.OSM(
321						"mapquest aerial",
322						[
323								"http://oatile1.mqcdn.com/naip/${z}/${x}/${y}.jpg",
324								"http://oatile2.mqcdn.com/naip/${z}/${x}/${y}.jpg",
325								"http://oatile3.mqcdn.com/naip/${z}/${x}/${y}.jpg",
326								"http://oatile4.mqcdn.com/naip/${z}/${x}/${y}.jpg" ],
327						{
328							transitionEffect : 'resize',
329							attribution : 'Tiles Courtesy of <a href="http://www.mapquest.com/" target="_blank">MapQuest</a>'
330									+ '<img src="http://developer.mapquest.com/content/osm/mq_logo.png" heigth="16" width="16">',
331							visibility : false,
332							numZoomLevels : 12
333						}));
334	}
335
336	/* open aerial map layers */
337	/*
338	 * turn this off; project is asleep:
339	 * https://sourceforge.net/tracker/?func=detail&aid=2897327&group_id=239475&atid=1110186
340	 * m.addLayer(new OpenLayers.Layer.XYZ("OpenAerialMap",
341	 * "http://tile.openaerialmap.org/tiles/1.0.0/openaerialmap-900913/${z}/${x}/${y}.jpg",
342	 * {name: "OpenStreetMap", attribution: "Data CC-By by <a
343	 * href='http://www.openaerialmap.org/licensing/'>OpenAerialMap</a>",
344	 * sphericalMercator: true, transitionEffect: 'resize'} ));
345	 */
346
347	/* controle of google/yahoo/ve api's beschikbaar zijn.. */
348	if (gEnable) {
349		try {
350			m.addLayer(new OpenLayers.Layer.Google("google relief", {
351				type : google.maps.MapTypeId.TERRAIN,
352				// transitionEffect : 'resize',
353				numZoomLevels : 16,
354				animationEnabled : true,
355				visibility : false
356			}));
357			m.addLayer(new OpenLayers.Layer.Google("google sat", {
358				type : google.maps.MapTypeId.SATELLITE,
359				// transitionEffect : 'resize',
360				// numZoomLevels : 22,
361				animationEnabled : true,
362				visibility : false
363			}));
364			m.addLayer(new OpenLayers.Layer.Google("google hybrid", {
365				type : google.maps.MapTypeId.HYBRID,
366				// transitionEffect : 'resize',
367				// numZoomLevels : 20,
368				animationEnabled : true,
369				visibility : false
370			}));
371			m.addLayer(new OpenLayers.Layer.Google("google normal", {
372				// transitionEffect : 'resize',
373				// numZoomLevels : 20,
374				animationEnabled : true,
375				visibility : false
376			}));
377		} catch (ol_err1) {
378			Openlayers.Console.userError('Error loading Google maps' + ol_err1);
379		}
380	}
381
382	// if (yEnable) {
383	// try {
384	// m.addLayer(new OpenLayers.Layer.Yahoo("yahoo", {
385	// 'type' : YAHOO_MAP_HYB,
386	// 'sphericalMercator' : true,
387	// transitionEffect : resize
388	// }));
389	// } catch (ol_err2) {
390	// }
391	// }
392
393	if (veEnable) {
394		try {
395			m.addLayer(new OpenLayers.Layer.VirtualEarth("ve", {
396				type : VEMapStyle.Hybrid,
397				sphericalMercator : true,
398				transitionEffect : 'resize',
399				visibility : false
400			}));
401		} catch (ol_err3) {
402		}
403	}
404	m.setCenter(new OpenLayers.LonLat(mapOpts.lon, mapOpts.lat).transform(
405			m.displayProjection, m.projection), mapOpts.zoom);
406	extent.extend(m.getExtent());
407
408	// change/set alternative baselyr
409	try {
410		m.setBaseLayer(((m.getLayersByName(mapOpts.baselyr))[0]));
411	} catch (ol_err4) {
412		m.setBaseLayer(m.layers[0]);
413	}
414
415	if (mapOpts.controls === 1) {
416		/* add base controls to map */
417		m.addControl(new OpenLayers.Control.LayerSwitcher({
418			roundedCorner : false,
419			roundedCornerColor : null
420		}));
421		m.addControl(new OpenLayers.Control.PanZoomBar());
422		m.addControl(new OpenLayers.Control.Graticule({
423			visible : false
424		}));
425
426		// add hillshade, since this is off by default only add when we have a
427		// layerswitcher
428		m.addLayer(new OpenLayers.Layer.OSM("Hillshade",
429				"http://toolserver.org/~cmarqu/hill/${z}/${x}/${y}.png", {
430					transitionEffect : 'resize',
431					isBaseLayer : false,
432					transparent : true,
433					visibility : false,
434					displayOutsideMaxExtent : true,
435					attribution : ''
436				}));
437
438		m.addControl(new OpenLayers.Control.OverviewMap({
439			size : new OpenLayers.Size(140, 140),
440			mapOptions : {
441				theme : null
442			},
443			layers : [ m.baseLayer.clone() ],
444			minRectSize : 10
445		}));
446	}
447
448	if (mapOpts.statusbar === 1) {
449		// statusbar control: permalink
450		m.addControl(new OpenLayers.Control.Permalink(mapOpts.id
451				+ '-statusbar-link-ref'));
452		// statusbar control: mouse pos.
453		// TODO kijken naar afronding met aNumber.toFixed(0)
454		m.addControl(new OpenLayers.Control.MousePosition({
455			'div' : OpenLayers.Util.getElement(mapOpts.id
456					+ '-statusbar-mouseposition')
457		}));
458		// statusbar control: scale
459		m.addControl(new OpenLayers.Control.Scale(mapOpts.id
460				+ '-statusbar-scale'));
461		// statusbar control: attribution
462		m.addControl(new OpenLayers.Control.Attribution({
463			'div' : OpenLayers.Util.getElement(mapOpts.id + '-statusbar-text')
464		}));
465		// statusbar control: projection
466		OpenLayers.Util.getElement(mapOpts.id + '-statusbar-projection').innerHTML = m.displayProjection;
467	} else {
468		OpenLayers.Util.getElement(mapOpts.id + '-olStatusBar').display = 'none';
469	}
470
471	if (mapOpts.toolbar === 1) {
472		// add buttons + panel
473		var zoomin = new OpenLayers.Control.ZoomBox({
474			title : "Zoom in"
475		}), /**/zoomout = new OpenLayers.Control.ZoomBox({
476			out : true,
477			title : "Zoom uit",
478			displayClass : "olControlZoomOut"
479		}), /**/pan = new OpenLayers.Control.DragPan({
480			title : "Verschuif"
481		}), /* do "nothing" button... */info = new OpenLayers.Control.Button({
482			type : OpenLayers.Control.TYPE_TOOL,
483			displayClass : "olControlFeatureInfo"
484		/* , trigger : selectControl.activate() */
485		}), /* navigation history */
486		nav = new OpenLayers.Control.NavigationHistory();
487		m.addControl(nav);
488		var panel = new OpenLayers.Control.Panel({
489			defaultControl : pan,
490			displayClass : "olToolbar",
491			"div" : OpenLayers.Util.getElement(mapOpts.id + "-olToolbar")
492		});
493		panel
494				.addControls([ zoomin, zoomout, pan, info, nav.next,
495						nav.previous ]);
496		// panel.addControls([ nav.next, nav.previous ]);
497		m.addControl(panel);
498	} else {
499		OpenLayers.Util.getElement(mapOpts.id + '-olToolbar').display = 'none';
500	}
501
502	if (OLmapPOI.length > 0) {
503		var markers = new OpenLayers.Layer.Vector(
504				"POI",
505				{
506					styleMap : new OpenLayers.StyleMap(
507							{
508								"default" : {
509									externalGraphic : "${img}",
510									graphicHeight : 16,
511									graphicWidth : 16,
512									graphicXOffset : 0,
513									graphicYOffset : -8,
514									graphicOpacity : "${opacity}",
515									rotation : "${angle}",
516									backgroundGraphic : DocBase
517											+ "lib/plugins/openlayersmap/icons/marker_shadow.png",
518									backgroundXOffset : 0,
519									backgroundYOffset : -4,
520									backgroundRotation : "${angle}",
521									pointRadius : 10,
522									labelXOffset : 8,
523									labelYOffset : 8,
524									labelAlign : "lb",
525									label : "${label}",
526									// fontColor : "",
527									fontFamily : "monospace",
528									fontSize : "12px",
529									fontWeight : "bold"
530								},
531								"select" : {
532									cursor : "crosshair",
533									externalGraphic : DocBase
534											+ "lib/plugins/openlayersmap/icons/marker-red.png",
535									graphicHeight : 16,
536									graphicWidth : 16,
537									graphicXOffset : 0,
538									graphicYOffset : -8,
539									graphicOpacity : 1.0,
540									rotation : "${angle}"
541								}
542							}),
543					isBaseLayer : false,
544					rendererOptions : {
545						yOrdering : true
546					}
547				});
548
549		m.addLayer(markers);
550		var features = [];
551		var lonLat;
552		for ( var j = 0; j < OLmapPOI.length; j++) {
553			var feat = new OpenLayers.Feature.Vector(
554					new OpenLayers.Geometry.Point(OLmapPOI[j].lon,
555							OLmapPOI[j].lat).transform(m.displayProjection,
556							m.projection), {
557						angle : OLmapPOI[j].angle,
558						opacity : OLmapPOI[j].opacity,
559						img : DocBase + "lib/plugins/openlayersmap/icons/"
560								+ OLmapPOI[j].img,
561						label : OLmapPOI[j].rowId
562					});
563			feat.data = {
564				name : OLmapPOI[j].txt,
565				rowId : OLmapPOI[j].rowId
566			};
567			features.push(feat);
568		}
569		markers.addFeatures(features);
570		extent.extend(markers.getDataExtent());
571		m.zoomToExtent(extent);
572	}
573
574	/* GPX layer */
575	if (mapOpts.gpxfile.length > 0) {
576		var layerGPX = new OpenLayers.Layer.GML("GPS route", DocBase
577				+ "lib/exe/fetch.php?media=" + mapOpts.gpxfile, {
578			format : OpenLayers.Format.GPX,
579			formatOptions : {
580				extractWaypoints : true,
581				extractTracks : true,
582				extractStyles : true,
583				extractAttributes : true,
584				handleHeight : true,
585				maxDepth : 3
586			},
587			style : {
588				strokeColor : "#0000FF",
589				strokeWidth : 3,
590				strokeOpacity : 0.7,
591				pointRadius : 4,
592				fillColor : "#0099FF",
593				fillOpacity : 0.7
594			/*
595			 * , label:"${name}"
596			 */},
597			projection : new OpenLayers.Projection("EPSG:4326")
598		});
599		m.addLayer(layerGPX);
600		layerGPX.events.register('loadend', m, function() {
601			extent.extend(layerGPX.getDataExtent());
602			m.zoomToExtent(extent);
603		});
604
605	}
606
607	/* KML layer */
608	if (mapOpts.kmlfile.length > 0) {
609		var layerKML = new OpenLayers.Layer.GML("KML file", DocBase
610				+ "lib/exe/fetch.php?media=" + mapOpts.kmlfile, {
611			format : OpenLayers.Format.KML,
612			formatOptions : {
613				extractStyles : true,
614				extractAttributes : true,
615				maxDepth : 3
616			},
617			style : {
618				label : "${name}"
619			},
620			projection : new OpenLayers.Projection("EPSG:4326")
621		});
622		m.addLayer(layerKML);
623		layerKML.events.register('loadend', m, function() {
624			extent.extend(layerKML.getDataExtent());
625			m.zoomToExtent(extent);
626		});
627	}
628
629	// selectcontrol for layers
630	if ((m.getLayersByClass('OpenLayers.Layer.GML').length > 0)
631			|| m.getLayersByClass('OpenLayers.Layer.Vector').length > 0) {
632		selectControl = new OpenLayers.Control.SelectFeature((m
633				.getLayersByClass('OpenLayers.Layer.Vector')).concat(m
634				.getLayersByClass('OpenLayers.Layer.GML')), {
635			hover : mapOpts.poihoverstyle,
636			onSelect : onFeatureSelect,
637			onUnselect : onFeatureUnselect
638		});
639		m.addControl(selectControl);
640		selectControl.activate();
641	}
642
643	return m;
644}
645
646/**
647 * ol api flag.
648 *
649 * @type {Boolean}
650 */
651var olEnable = false,
652/**
653 * MapQuest tiles flag.
654 *
655 * @type {Boolean}
656 */
657mqEnable = false,
658/**
659 * google map api flag.
660 *
661 * @type {Boolean}
662 */
663gEnable = false,
664/**
665 * virtual earth map api flag.
666 *
667 * @type {Boolean}
668 */
669veEnable = false,
670/**
671 * OSM tiles flag.
672 *
673 * @type {Boolean}
674 */
675osmEnable = true;
676/**
677 * yahoo map api flag.
678 *
679 * @type {Boolean}
680 */
681// yEnable = false;
682/* register olInit to run with onload event. */
683addInitEvent(olInit);
684