/*function isVisible(lat1,lon1,lat2,lon2) {
	var bounds = mapviewer.getMapBounds();
	if((lat1<bounds.getNorthEast().lat && lat1>bounds.getSouthWest().lat &&
		lon1<bounds.getNorthEast().lon && lon1>bounds.getSouthWest().lon) && 
	(lat2<bounds.getNorthEast().lat && lat2>bounds.getSouthWest().lat &&
		lon2<bounds.getNorthEast().lon && lon2>bounds.getSouthWest().lon)) {
		return true;
	} else {
		return FALSE;
	}
}
	
function showBoth(lat1,lon1,lat2,lon2) {
	if(lat1>lat2) {
		lat1 += 0.0005;
		lat2 -= 0.0005;
	} else {
		lat1 -= 0.0005;
		lat2 += 0.0005;
	}
	var points = new Array(new MMLatLon(lat1,lon1), new MMLatLon(lat2,lon2)); 
	mapviewer.goToPosition( mapviewer.getAutoScaleLocation(points));
}

function addMarkerToArray(number,marker) {
	if(number>10) {
		number -= 10;
	}
	markers[number-1] = marker;
}

function showInfoBox(marker_no) {
	if(marker_no>10) {
		marker_no -= 10;
	}
	for(i=0;i<markers.length;i++) {
		if(i!=marker_no-1) {
			markers[i].closeInfoBox();
		} else {
			markers[marker_no-1].openInfoBox();
		}
	}
}

function toMiles(km) {
	var miles = km*0.621371192;
	return miles.toFixed(2);
}

//Add a marker to the map at the specified point, and attach an info box showing a number	
function createMarker(location, number, desc, address, distance_km, mapcenter) {
var icon = MM_DEFAULT_ICON.copy();
var marker = mapviewer.createMarker(location, {'label' : 'Marker #' + number, 'icon' : icon, 'text' : number});
var html = '';  
html += '<h4>' + desc + '<' + '/h4>';
html += '<p>' + address + '<' + '/p>';
html += '<p>' + distance + ': ' + distance_km + 'km (' + toMiles(distance_km) + 'm)<' + '/p>';
marker.setInfoBoxContent(html);
addMarkerToArray(number,marker);
}

function createMarkerG( details, mapcenter) {
var location = details[0];
var number = details[1];
var name = details[2];
var address = details[3];
var distance_km = details[4];
var icon = MM_DEFAULT_ICON.copy();

icon.groupName  = group_name;
var marker = mapviewer.createMarker ( location, { zIndex: (max_zindex - number), 'label' : group_name + " : Marker #" + number, 'icon' : icon, 'text' : number} );
//var html = '<h1>' + group_name + " : Marker #" + number + '</h1>';
var html = '';  
html += '<h4>' + name + '<' + '/h4>';
html += '<p>' + address + '<' + '/p>';
html += '<p>' + distance + ': ' + distance_km + 'km (' + toMiles(distance_km) + 'm)<' + '/p>';
marker.setInfoBoxContent( html );
addMarkerToArray(number,marker);
}  

function createMarkersGroups(mapcenter) {
	for (var i = 0; i < locations.length; i++) {
		for(var j = 0; j < locations[i].length; j++) {
			createMarkerG( locations[i][j], mapcenter);
		}
	}
}

function goToPosition(lat, lon) { 
mapviewer.goToPosition(new MMLatLon(lat, lon));
}

function goToNext(page) {
	document.getElementById("page").value = page;
	document.main.submit();
}*/

function clearMaxPrice() {
	if(document.getElementById("max_price").value == 'max') document.getElementById("max_price").value = '';
}

function clearMinPrice() {
	if(document.getElementById("min_price").value == 'min') document.getElementById("min_price").value = '';
}

function isNumber() {
	if(isNaN(document.getElementById("price_pw").value)) {
		alert('Wprowadzona cena jest niepoprawna');
		document.getElementById("price_pw").focus();
	}
}