function WMSCreateMap(name,copyright,baseUrl,layer,format,transparent,opacity,minResolution,maxResolution,extraTileLayers,urlArg)
{var tileLayer=new GTileLayer(new GCopyrightCollection(copyright),minResolution,maxResolution);tileLayer.baseUrl=baseUrl;tileLayer.layer=layer;tileLayer.format=format;tileLayer.transparent=transparent;tileLayer.getTileUrl=WMSGetTileUrl;tileLayer.getOpacity=function(){return opacity;};tileLayer.getCopyright=function(){return{prefix:'',copyrightTexts:[copyright]};};var tileLayers=[];for(var i in extraTileLayers)
tileLayers.push(extraTileLayers[i]);tileLayers.push(tileLayer);return new GMapType(tileLayers,G_SATELLITE_MAP.getProjection(),name,{urlArg:urlArg});}
function WMSGetTileUrl(tile,zoom)
{var southWestPixel=new GPoint(tile.x*256,(tile.y+1)*256);var northEastPixel=new GPoint((tile.x+1)*256,tile.y*256);var southWestCoords=G_NORMAL_MAP.getProjection().fromPixelToLatLng(southWestPixel,zoom);var northEastCoords=G_NORMAL_MAP.getProjection().fromPixelToLatLng(northEastPixel,zoom);var bbox=southWestCoords.lng()+','+southWestCoords.lat()+','+northEastCoords.lng()+','+northEastCoords.lat();var transparency=this.transparent?'&TRANSPARENT=TRUE':'';return this.baseUrl+'?VERSION=1.1.1&REQUEST=GetMap&LAYERS='+this.layer+'&STYLES=&SRS=EPSG:4326&BBOX='+bbox+'&WIDTH=256&HEIGHT=256&FORMAT='+this.format+'&BGCOLOR=0xCCCCCC&EXCEPTIONS=INIMAGE'+transparency;}
function OSMCreateMap(name,copyright,baseUrl,opacity,minResolution,maxResolution,extraTileLayers,urlArg)
{var tileLayer=new GTileLayer(new GCopyrightCollection(copyright),minResolution,maxResolution);tileLayer.baseUrl=baseUrl;tileLayer.getTileUrl=OSMGetTileUrl;tileLayer.getOpacity=function(){return opacity;};tileLayer.getCopyright=function(){return{prefix:'',copyrightTexts:[copyright]};};var tileLayers=[];for(var i in extraTileLayers)
tileLayers.push(extraTileLayers[i]);tileLayers.push(tileLayer);return new GMapType(tileLayers,G_SATELLITE_MAP.getProjection(),name,{urlArg:urlArg});}
function OSMGetTileUrl(tile,zoom)
{return this.baseUrl+zoom+'/'+tile.x+'/'+tile.y+'.png';}
var WMS_TOPO_MAP=WMSCreateMap('Topo','Imagery by USGS / Service by TerraServer','http://www.terraserver-usa.com/ogcmap6.ashx','DRG','image/jpeg',false,1.0,4,17,[],'t');var WMS_DOQ_MAP=WMSCreateMap('DOQ','Imagery by USGS / Service by TerraServer','http://www.terraserver-usa.com/ogcmap6.ashx','DOQ','image/jpeg',false,1.0,4,18,[],'o');var WMS_NEXRAD_MAP=WMSCreateMap('NEXRAD','Data by NWS / Service by Iowa U. Ag. Dept.','http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi','nexrad-n0r','image/png',true,0.666,4,10,G_HYBRID_MAP.getTileLayers(),'n');var OSMServers=['a.tile.openstreetmap.org','b.tile.openstreetmap.org','c.tile.openstreetmap.org'];var OSMServer=OSMServers[Math.floor(Math.random()*OSMServers.length)];var OSM_MAPNIK_MAP=OSMCreateMap('Mapnik','OpenStreetMap / Mapnik','http://'+OSMServer+'/',1.0,0,18,[],'k');