var glSosOffering = '';
var glSosName = '';
var glSosDataStore = null;
var glSosLayer = null;
var glSosUrl = '';
var glSosOfferings = null;
var glSosMarkers = null;
var glSosSelectedFeature = null;
var glStatusDlg = null;
var dlgWidth = 0;
var dlgHeight = 0;


function CreateStatusDialog(caption, msg) {
    CloseStatusDialog();
    glStatusDlg = Ext.MessageBox.wait(msg, caption);
}

function CloseStatusDialog() {
    if (glStatusDlg) {
        glStatusDlg.hide();
        glStatusDlg = null;
    }        
}

function sosSaveLoaded(ret) {
    var q = Ext.DomQuery;        
    CloseStatusDialog();
    var values = q.selectValue('swe_values', ret.responseXML, '');
    if (values == '')
        return;
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'savecsv.asp',
        method: 'POST',
        params: { text: values },
        success: function(a, b, c) {
            var frame = frames['hidden-download-frame'];
            if (frame == null)
                frame = parent.frames['hidden-download-frame'];
            if (frame == null)                
                frame = parent.parent.frames['hidden-download-frame'];
            if (frame == null)                                
                window.open('downloadcsv.asp?name=data.csv&file=' + 'temp/data.csv');
            else
                frame.location = 'downloadcsv.asp?name=data.csv&file=' + 'temp/data.csv';
        },
        failure: function() { CloseStatusDialog(); alert('get features failed'); }
    });
        
    
}

function sosPlotLoaded(ret) {
    var q = Ext.DomQuery;        
    CloseStatusDialog();
    var values = q.selectValue('swe_values', ret.responseXML, '');
    if (values == '')
        return;
        
    var data = new google.visualization.DataTable();
    data.addColumn('string', 'Date');
    data.addColumn('number', glSosOffering);
        

    arvals = new Array();                
    var readings = values.split(';');
    for (var i=0; i<readings.length; i++) {
        var reading = readings[i];
        var vals  = reading.split(',');
        var time  = vals[0];
        var feid  = vals[1];
        var value = vals[2];
        arvals.push(parseFloat(value));
        data.addRows( [ [ time, parseFloat(value)] ] );
    }

    var options = {
      title: glSosName
    };

    var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
    chart.draw(data, options);
}



function doSosSave(url, featureid, offering, property, startdate, enddate) {
    var xml = '<GetObservation xmlns="http://www.opengis.net/sos/1.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:om="http://www.opengis.net/om/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosGetObservation.xsd" service="SOS" version="1.0.0" > \n';
    xml += '<offering>'+offering+'</offering> \n';
    xml += '<eventTime>\n';
    xml += '<ogc:TM_During>\n';
    xml += '<ogc:PropertyName>urn:ogc:data:time:iso8601</ogc:PropertyName>\n';
    xml += '<gml:TimePeriod>\n';
    xml += '<gml:beginPosition>'+startdate+'</gml:beginPosition>\n';
    xml += '<gml:endPosition>'+enddate+'</gml:endPosition>\n';
    xml += '</gml:TimePeriod>\n';
    xml += '</ogc:TM_During>\n';
    xml += '</eventTime>\n';
    xml += '<observedProperty>'+property+'</observedProperty>\n';
    xml += '<featureOfInterest> <ObjectID>'+featureid+'</ObjectID> </featureOfInterest> \n';
    xml += '<responseFormat>text/xml;subtype=&quot;om/1.0.0&quot;</responseFormat>\n';
    xml += '</GetObservation>\n';
    

    CreateStatusDialog("SAEON - SOS", "Loading Section: GetObservations");
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'tear_ns.asp?URL=' + escape(url),
        method: 'POST',
        success: sosSaveLoaded,
        params: xml,
        failure: function() { CloseStatusDialog(); alert('get features failed'); }
    });
}

function doSosPlot(url, featureid, offering, property, startdate, enddate) {
    if (url.indexOf('?') == -1)
        url += '?';
    glSosOffering = offering;

    var plotDlgWidth = Math.min(700-20, dlgWidth - 20);
    var plotDlgHeight = Math.min(420-20, dlgHeight - 20);
    
    // create window    
    var infoDlg = new Ext.Window({
    width: plotDlgWidth,
    height: plotDlgHeight,
	    closable: true,
	    modal: true,
	    title: 'Plot',
	    layout: 'fit',
	    html: '<div id="chart_div" style="width:100%; height:100%">chart</div>',
	    buttons: [ {
		    text: 'OK',
		    minWidth: 75,
		    handler: function() {
		    	    infoDlg.close();
		        }
		    }				
	    ]
	    
    });
    // show window
    infoDlg.show();	

    var xml = '<GetObservation xmlns="http://www.opengis.net/sos/1.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:om="http://www.opengis.net/om/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosGetObservation.xsd" service="SOS" version="1.0.0" > \n';
    xml += '<offering>'+offering+'</offering> \n';
    xml += '<eventTime>\n';
    xml += '<ogc:TM_During>\n';
    xml += '<ogc:PropertyName>urn:ogc:data:time:iso8601</ogc:PropertyName>\n';
    xml += '<gml:TimePeriod>\n';
    xml += '<gml:beginPosition>'+startdate+'</gml:beginPosition>\n';
    xml += '<gml:endPosition>'+enddate+'</gml:endPosition>\n';
    xml += '</gml:TimePeriod>\n';
    xml += '</ogc:TM_During>\n';
    xml += '</eventTime>\n';
    xml += '<observedProperty>'+property+'</observedProperty>\n';
    xml += '<featureOfInterest> <ObjectID>'+featureid+'</ObjectID> </featureOfInterest> \n';
    xml += '<responseFormat>text/xml;subtype=&quot;om/1.0.0&quot;</responseFormat>\n';
    xml += '</GetObservation>\n';

    CreateStatusDialog("SAEON - SOS", "Loading Section: GetObservations");
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'tear_ns.asp?URL=' + escape(url),
        method: 'POST',
        success: sosPlotLoaded,
        params: xml,
        failure: function() { CloseStatusDialog(); alert('get features failed'); }
    });
}

function setSosFieldValue(ret) {
    var q = Ext.DomQuery;
    var code  = q.selectValue('swe_uom/@code', ret.responseXML, '');
    var values = q.selectValue('swe_values', ret.responseXML, '');
    if (values == '')
        return;
    
    var vals  = values.split(',');
    var time  = vals[0];
    var feid  = vals[1];
    var value = vals[2];
    var value = value.replace(';', '');
    
    var fields = q.select('swe_component', ret.responseXML);
    for (var x=0; x<fields.length; x++) {
        var pval = fields[x].attributes[0].value;
        for (var i=0; i<glSosOfferings.length; i++) {
            for (var p=0; p<glSosOfferings[i].props.length; p++) {
                if (glSosOfferings[i].props[p] == pval) {
                    var recs = glSosDataStore.data.items;
                    for (var r=0; r<recs.length; r++) {
                        if (recs[r].get('id') == glSosOfferings[i].id) {
                            recs[r].set('value', value + ' ' + code);
                            recs[r].set('selected', true);
                            
                            recs[r].commit();
                        }
                    }
                }
            }
        }    
    }
}

function showSosInfo(id, name) {

    glSosSelectedFeature = id;
    var infoDlg = null;

    dlgWidth = Math.min(700, document.body.clientWidth - 20);
    dlgHeight = Math.min(420, document.body.clientHeight - 20);

    var data = [[-1, 'ID', '' + id, false], [-1, 'Name', '' + name, false] ];
    
    for (var i=0; i<glSosOfferings.length; i++) {
        for (var p=0; p<glSosOfferings[i].featurers.length; p++) {
            if (glSosOfferings[i].featurers[p] == id) {
                var offering = glSosOfferings[i];
                data.push( [offering.id, offering.name, ''] );
                
                var xml = '<?xml version="1.0" encoding="UTF-8"?>\n';
                xml += '<GetObservation xmlns="http://www.opengis.net/sos/1.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:om="http://www.opengis.net/om/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosGetObservation.xsd" service="SOS" version="1.0.0" >\n';
                xml += '  <offering>' + offering.id + '</offering>\n';
                xml += '  <eventTime>\n';
                xml += '    <ogc:TM_Equals xmlns:ogc="http://www.opengis.net/ogc">  \n';
                xml += '      <ogc:PropertyName>urn:ogc:data:time:iso8601</ogc:PropertyName>  \n';
                xml += '      <gml:TimeInstant xmlns:gml="http://www.opengis.net/gml">\n';
                xml += '        <gml:timePosition>latest</gml:timePosition>  \n';
                xml += '      </gml:TimeInstant>\n';
                xml += '    </ogc:TM_Equals>\n';
                xml += '   </eventTime>\n';
                xml += '   <observedProperty>' + offering.props[0] + '</observedProperty>  \n';
                xml += '   <featureOfInterest>\n';
                xml += '     <ObjectID>' + id + '</ObjectID>\n';
                xml += '   </featureOfInterest>\n';
                xml += '   <responseFormat>text/xml;subtype=&quot;om/1.0.0&quot;</responseFormat>\n';
                xml += '</GetObservation>\n';                        
                
                CreateStatusDialog("SAEON - SOS", "Loading Section: GetObservation");
                var conn = new Ext.data.Connection( { timeout : 120000 } );
                conn.request({
                    url: 'tear_ns.asp?URL=' + escape(glSosUrl),
                    method: 'POST',
                    success: setSosFieldValue,
                    failure: function() {
                        CloseStatusDialog();
                        alert('Failed to load observations');
                    
                    },
                    params: xml
                });
            }
        }
    }
    
    glSosDataStore = new Ext.data.ArrayStore({
	    fields: ['id', 'item', 'value', 'selected', 'prevsel'],
	    data: data,
        listeners: {
            update: OnGridEdit
        }
    });

    
    function OnGridEdit(store, rec) {
        if (rec.get('prevsel') != rec.get('selected')) {
            rec.set('prevsel', rec.get('selected'));
            rec.commit();
        }
    }
    
    
    var sossm = new Ext.grid.RowSelectionModel( { singleSelect:true } );
    sossm.addListener('selectionchange', onSosSelChange);

    function onSosSelChange() {
        var grid = Ext.getCmp('sosvalgrid');
        var sm = grid.selModel;
        var rec = sm.getSelected();
        if (rec && parseInt(rec.get('id')) != -1) {
            Ext.getCmp('plot-btn').enable();
            Ext.getCmp('plot-csv').enable();
            
        }
        else {
            Ext.getCmp('plot-btn').disable();
            Ext.getCmp('plot-csv').disable();
        }
    }
    
    function doPlotButton() {
        var grid = Ext.getCmp('sosvalgrid');
        var sm = grid.selModel;
        var rec = sm.getSelected();
        
        
        for (var i=0; i<glSosOfferings.length; i++) {
            if (glSosOfferings[i].id == rec.get('id')) {
                var offering = glSosOfferings[i];
	            var date1 = Date(Ext.getCmp('sos-date-1').getValue()).toString('yyyy-MM-dd');
	            var date2 = Date(Ext.getCmp('sos-date-2').getValue()).toString('yyyy-MM-dd');
                doSosPlot(glSosUrl, glSosSelectedFeature, offering.id, offering.props[0], '2011-01-01T12:44:15+00', '2011-01-05T12:44:15+00');
            }
        }
    }
    
    function doSaveButton() {
        var grid = Ext.getCmp('sosvalgrid');
        var sm = grid.selModel;
        var rec = sm.getSelected();
        for (var i=0; i<glSosOfferings.length; i++) {
            if (glSosOfferings[i].id == rec.get('id')) {
                var offering = glSosOfferings[i];
	            var date1 = Date(Ext.getCmp('sos-date-1').getValue()).toString('yyyy-MM-dd');
	            var date2 = Date(Ext.getCmp('sos-date-2').getValue()).toString('yyyy-MM-dd');
                doSosSave(glSosUrl, glSosSelectedFeature, offering.id, offering.props[0], '2011-01-01T12:44:15+00', '2011-01-05T12:44:15+00');
            }
        }
    }
    
    glSosName = name;
	
    // create window    
    infoDlg = new Ext.Window({
        width:  dlgWidth,
	    height: dlgHeight,
	    closable: true,
	    modal: true,
	    title: name,
	    layout: 'fit',
	    items: [ 
        {
	        xtype: 'grid',
	        id: 'sosvalgrid',
	        sm: sossm,
	        tbar: [
	        'Start date:',
	        {
	            id: 'sos-date-1',
	            xtype: 'datefield',
	            value: '01/01/2011'
            },
	        '&nbsp;End date:',
	        {
	            id: 'sos-date-2',
	            xtype: 'datefield',
	            value: '01/05/2013'
            },
            '&nbsp;',
	        {
	            id: 'plot-btn',
	            disabled: true,
	            text: 'Plot&nbsp;&nbsp;&nbsp;&nbsp;',
	            icon: 'icons/chart_line.png',
	            handler: doPlotButton
	        
	        },
	        {
	            id: 'plot-csv',
	            disabled: true,
	            text: 'Save as CSV&nbsp;&nbsp;&nbsp;&nbsp;',
	            icon: 'icons/save.gif',
	            handler: doSaveButton
	        
	        }
	        
	        ],
	        store: glSosDataStore,
            autoExpandColumn: 'text',
            stripeRows: true,
            columns: [
                {id: 'id', header: "Item", dataIndex: 'item', sortable: true, width: 200 },
                {id: 'text', header: "Value", dataIndex: 'value', sortable: true }
            ],
            listeners: {
                update: OnGridEdit
            }
            
        }    
	    ],
	    buttonAlign: 'center',
	    
	    buttons: [ {
		    text: 'OK',
		    minWidth: 75,
		    handler: function() {
		    	    infoDlg.close();
		        }
		    }				
	    ]
	    
    });
	
    // show window
    infoDlg.show();	

}

var featureIndex = 0;

function AddFeature(root) {
    var q = Ext.DomQuery;
    var id = q.selectValue('sa_SamplingPoint/@gml_id', root);
    var name = q.selectValue('gml_name', root);
    var pos = q.selectValue('gml_pos', root);
    var prj = null;
    if (pos) {
        var prf = q.selectValue('gml_pos/@srsName', root);
        var srs = '';
        var prj = null;
        var pov = prf.split(':');
        if (pov.length > 5) {
            srs = pov[4] + ':' + pov[5];
            prj = new OpenLayers.Projection(srs);//"EPSG:900913")
        }    
        var pp = pos.split(' ');
        var lat = parseFloat(pp[0]);
        var lon = parseFloat(pp[1]);
        
        var lonLatMarker = new OpenLayers.LonLat(lon, lat);
        if (prj)
            lonLatMarker = lonLatMarker.transform(prj,  map.getProjectionObject());
        if (map.displayProjection)
            lonLatMarker = lonLatMarker.transform(map.displayProjection,  map.projection);

    }
    else {
        var feature = q.select('om_featureOfInterest', root);
        if (feature.length > 0) {
            id = feature[0].attributes[0].value;
            var coords = q.selectValue('gml_coordinates', root);
            var pp  = coords.split(',');
            var lat = parseFloat(pp[1]);
            var lon = parseFloat(pp[0]);
            
            var lonLatMarker = new OpenLayers.LonLat(lon, lat);
            if (map.displayProjection)
                lonLatMarker = lonLatMarker.transform(map.displayProjection,  map.projection);
        }

        // get next feature            
        var xml = '<GetFeatureOfInterest xmlns="http://www.opengis.net/sos/1.0" version="1.0.0" service="SOS" xsi:schemaLocation="http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosAll.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">\n';
        var featureID = '' + arFeaturers[++featureIndex];
        xml += '<FeatureOfInterestId>' + featureID + '</FeatureOfInterestId>\n'
        xml += '</GetFeatureOfInterest>\n';
        CreateStatusDialog("SAEON - SOS", "Loading Section: GetFeatureOfInterest");
        var conn = new Ext.data.Connection( { timeout : 120000 } );
        conn.request({
            url: 'tear_ns.asp?URL=' + escape(glSosUrl),
            method: 'POST',
            success: getFeaturesDone,
            params: xml,
            failure: function() { CloseStatusDialog(); alert('get features failed'); }
        });
    }
    
  
    var html = '<table>';
    html += '<tr><td>id:</td><td>' + id + '</td></tr>'
    html += '<tr><td>name:</td><td>' + name + '</td></tr>'
    var offeringCount = 1;

    for (var i=0; i<glSosOfferings.length; i++) {
        for (var p=0; p<glSosOfferings[i].featurers.length; p++) {
            if (glSosOfferings[i].featurers[p] == id) {
                html += '<tr><td>' + glSosOfferings[i].name + ':</td><td><div id="xxx">loading data...</div></td></tr>'
                offeringCount++;
            }
        }
    }
    
    html += '</table>';
    if (offeringCount > 0) {
        var feature = new OpenLayers.Feature(glSosLayer, lonLatMarker);
        feature.closeBox = true;
        feature.popupClass = OpenLayers.Class(OpenLayers.Popup.AnchoredBubble, {minSize: new OpenLayers.Size(400, 150) } );
        feature.data.popupContentHTML = html;
        feature.data.overflow = "auto";
        feature.id = id;
        feature.name = name;

        var size = new OpenLayers.Size(21,25);
        var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
        var icon = new OpenLayers.Icon('http://www.openlayers.org/dev/img/marker.png',size, offset);
        var marker = new OpenLayers.Marker(lonLatMarker, icon);
        marker.feature = feature;
        
        this.marker = marker;

        var markerClick = function(evt, a, b, c, d) {
            var f = this.feature;
            showSosInfo(f.id, f.name);
            OpenLayers.Event.stop(evt);
        };
        
        markerClick.marker = marker;
        marker.events.register("mousedown", marker, markerClick);
        glSosLayer.addMarker(marker);
    }
}


function getFeaturesDone(ret) {
    var q = Ext.DomQuery;
    var members = q.select('gml_featureMember', ret.responseXML);
    var members_found = false;
    for (var m=0; m<members.length; m++) {
        var member = members[m];
        AddFeature(member);
        members_found = true;
    }
    if (members_found == false) {
        AddFeature(ret.responseXML);
    }
    CloseStatusDialog();
    
    
    if (parent.enableAddChartButton)
        parent.enableAddChartButton(this);
}



function addFeaturesOfInterest(ret) {
    arFeaturers = new Array();
    var xml = ret.responseXML;
    var q = Ext.DomQuery; 
    

    var items = q.select('ows_Parameter', xml);
    for (var i=0; i<items.length; i++) {
        if (items[i].attributes[0].value == 'featureOfInterest') {
            var params = items[i];
            var foss = q.select('ows_Value', params);
            for (var f=0; f<foss.length; f++) {
                var fos = foss[f];
                arFeaturers.push(fos.firstChild.text ? fos.firstChild.text : fos.firstChild.wholeText)
            }                        
        }
    }
    
    // format xml
    var xml = '<GetFeatureOfInterest xmlns="http://www.opengis.net/sos/1.0" version="1.0.0" service="SOS" xsi:schemaLocation="http://www.opengis.net/sos/1.0 http://schemas.opengis.net/sos/1.0.0/sosAll.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">\n';
    for (var p=0; p<arFeaturers.length; p++) {  // 
        var featureID = '' + arFeaturers[p];
        xml += '<FeatureOfInterestId>' + featureID + '</FeatureOfInterestId>\n'
    }
    xml += '</GetFeatureOfInterest>\n';
    
    // get features
    CreateStatusDialog("SAEON - SOS", "Loading Section: GetFeatureOfInterest");
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'tear_ns.asp?URL=' + escape(glSosUrl),
        method: 'POST',
        success: getFeaturesDone,
        params: xml,
        failure: function() { CloseStatusDialog(); alert('get features failed'); }
    });
}

function addSosGetCaps(ret) {
    glSosOfferings = new Array();
    var xml = ret.responseXML;
    var q = Ext.DomQuery; 
    var list = q.select('sos_ObservationOffering', xml); 
    for (var i=0; i<list.length; i++) {
        var offering = list[i];
        var id = offering.attributes[0].value;
        var name = q.selectValue('gml_name', offering);
        var item = { id: id, name: name, featurers: [], props: []};
        var featurers = q.select('sos_featureOfInterest', offering);
        for (var p=0; p<featurers.length; p++) {
            var featurer = featurers[p];
            var url = featurer.attributes[0].value;
            item.featurers.push(url);
        }
        
        var props = q.select('sos_observedProperty', offering);
        for (var p=0; p<props.length; p++) {
            var pval = props[p].attributes[0].value;
            item.props.push(pval);
        }
        
        glSosOfferings.push(item);
    }
    
    var xml = '';
    xml += '<?xml version="1.0" encoding="UTF-8"?>\n';
    xml += '<GetCapabilities xmlns="http://www.opengis.net/sos/1.0"\n';
    xml += 'xmlns:ows="http://www.opengis.net/ows/1.1"\n';
    xml += 'xmlns:ogc="http://www.opengis.net/ogc"\n';
    xml += 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n';
    xml += 'xsi:schemaLocation="http://www.opengis.net/sos/1.0\n';
    xml += 'http://schemas.opengis.net/sos/1.0.0/sosGetCapabilities.xsd"\n';
    xml += 'service="SOS">\n';
    xml += '<ows:AcceptVersions>\n';
    xml += '<ows:Version>1.0.0</ows:Version>\n';
    xml += '</ows:AcceptVersions>\n';
    xml += '<ows:Sections>  \n';
    xml += '<ows:Section>OperationsMetadata</ows:Section>\n';
    xml += '</ows:Sections>\n';
    xml += '</GetCapabilities>\n';
    
    CreateStatusDialog("SAEON - SOS", "Loading Section: OperationsMetadata");
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'tear_ns.asp?URL=' + escape(glSosUrl),
        method: 'POST',
        success: addFeaturesOfInterest,
        params: xml,
        failure: function() { CloseStatusDialog(); alert('get caps failed'); }
    });
}

function createSosLayer(name, url) {
    if (url.indexOf('?') == -1)
        url += '?';
    glSosLayer = new OpenLayers.Layer.Markers(name);
    glSosUrl = url;
    
    var xml = '';
    xml += '<?xml version="1.0" encoding="UTF-8"?>\n';
    xml += '<GetCapabilities xmlns="http://www.opengis.net/sos/1.0"\n';
    xml += 'xmlns:ows="http://www.opengis.net/ows/1.1"\n';
    xml += 'xmlns:ogc="http://www.opengis.net/ogc"\n';
    xml += 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"\n';
    xml += 'xsi:schemaLocation="http://www.opengis.net/sos/1.0\n';
    xml += 'http://schemas.opengis.net/sos/1.0.0/sosGetCapabilities.xsd"\n';
    xml += 'service="SOS">\n';
    xml += '<ows:AcceptVersions>\n';
    xml += '<ows:Version>1.0.0</ows:Version>\n';
    xml += '</ows:AcceptVersions>\n';
    xml += '<ows:Sections>  \n';
    xml += '<ows:Section>Contents</ows:Section>\n';
    xml += '</ows:Sections>\n';
    xml += '</GetCapabilities>\n';
    
    CreateStatusDialog("SAEON - SOS", "Loading Section: Contents");
    var conn = new Ext.data.Connection( { timeout : 120000 } );
    conn.request({
        url: 'tear_ns.asp?URL=' + escape(glSosUrl),
        method: 'POST',
        success: addSosGetCaps,
        params: xml,
        failure: function() { CloseStatusDialog(); alert('get caps failed'); }
    });
    return glSosLayer;
}