diff --git a/WP-GPX-Maps.js b/WP-GPX-Maps.js
index 9d2e2e7..362f856 100644
--- a/WP-GPX-Maps.js
+++ b/WP-GPX-Maps.js
@@ -59,8 +59,10 @@ function _wpgpxmaps(params)
 		case 'ROADMAP': { mapType = google.maps.MapTypeId.ROADMAP; break;}
 		default: { mapType = google.maps.MapTypeId.HYBRID; break;}
 	}
+	
 	var mapOptions = {
-	  mapTypeId: mapType
+		mapTypeId: mapType,
+		scrollwheel: false
 	};
 	var map = new google.maps.Map(el_map, mapOptions); 
 	
@@ -129,14 +131,8 @@ function _wpgpxmaps(params)
 				marker.setTitle("Current Position");
 				if ( chart )
 				{
-					var l1 = event.latLng.Qa;				
-					if (!(l1))
-						l1 = event.latLng.Oa;
-						
-					var l2 = event.latLng.Ra;
-					if (!(l2))
-						l2 = event.latLng.Pa;	
-						
+					var l1 = event.latLng.lat();
+					var l2 = event.latLng.lng();					
 					var ci = getClosestIndex(mapData,l1,l2);
 					var r = chart.setSelection([{'row': parseInt(ci) + 1}]);
 				}
@@ -156,6 +152,11 @@ function _wpgpxmaps(params)
 			numberFormat1 = "#,##0.#mi";
 			numberFormat2 = "#,###ft";		
 		}
+		else if (unit=="2")
+		{
+			numberFormat1 = "#,###0.#km";
+			numberFormat2 = "#,###m";
+		}
 		
 		var showSpeed = (graphData[0].length == 3);
 
diff --git a/readme.txt b/readme.txt
index 8f13020..7c80ca1 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=basti
 Tags: maps, gpx, gps, graph, google maps, google chart, track, garmin
 Requires at least: 2.0.0
 Tested up to: 3.3
-Stable tag: 1.1.6
+Stable tag: 1.1.7
 License: GPLv2 or later
 
 Draws a gpx track with altitude graph
@@ -58,7 +58,7 @@ The attributes are:
 
 1. pointsoffset: skip points closer than XX meters(default is 10)
 
-1. uom: the unit of measure of distance/altitude are values are: 0, 1 (0 = meters, 1 = miles/feet)
+1. uom: the unit of measure of distance/altitude are values are: 0, 1, 2 (0 = meters, 1 = feet/miles, 2 = meters/kilometers)
 
 1. mlinecolor: map line color (default is #3366cc)
 
@@ -83,6 +83,10 @@ Yes!
 2. Admin area - Settings
 
 == Changelog ==
+= 1.1.7 =
+* new unit of measure (meters/kilometers)
+* mouse wheel scrolling issue fixed
+* minor bug fixes
 = 1.1.6 =
 * improved charts
 * improved admin area
diff --git a/wp-gpx-maps.php b/wp-gpx-maps.php
index ebafce3..2e4eca0 100644
--- a/wp-gpx-maps.php
+++ b/wp-gpx-maps.php
@@ -3,7 +3,7 @@
 Plugin Name: WP-GPX-Maps
 Plugin URI: http://www.darwinner.it/
 Description: Draws a gpx track with altitude graph
-Version: 1.1.6
+Version: 1.1.7
 Author: Bastianon Massimo
 Author URI: http://www.pedemontanadelgrappa.it/
 License: GPL
@@ -88,7 +88,7 @@ function handle_WP_GPX_Maps_Shortcodes($attr, $content='')
 		
 	$r = rand(1,5000000);
 
-	$cacheFileName = md5($gpx.$w.$mh.$mt.$gh.$showW.$donotreducegpx.$pointsoffset,$showSpeed);
+	$cacheFileName = md5($gpx.$w.$mh.$mt.$gh.$showW.$donotreducegpx.$pointsoffset.$showSpeed.$uom);
 	$gpxcache = gpxCacheFolderPath();
 	
 	if(!(file_exists($gpxcache) && is_dir($gpxcache)))
@@ -141,12 +141,25 @@ function handle_WP_GPX_Maps_Shortcodes($attr, $content='')
 		$points_graph = '';
 		$waypoints = '';
 	
-		if ($showSpeed == true)
-		{
-		
-			foreach ($points as $p) {
-				$points_maps .= '['.(float)$p[0].','.(float)$p[1].'],';
-				
+		foreach ($points as $p) {
+			$points_maps .= '['.(float)$p[0].','.(float)$p[1].'],';
+	
+			$_dist = $p[3];
+			$_ele = $p[2];
+			
+			if ($uom == '1')
+			{
+				// Miles and feet			
+				$_dist *= 0.000621371192;
+				$_ele *= 3.2808399;
+			} else if ($uom == '2')
+			{
+				// meters / kilometers
+				$_dist = $_dist/1000;
+			}
+			
+			if ($showSpeed == true) {
+			
 				$_speed = $p[4]; // dafault m/s
 				
 				if ($uomspeed == '2') // miles/h
@@ -156,37 +169,16 @@ function handle_WP_GPX_Maps_Shortcodes($attr, $content='')
 				else if ($uomspeed == '1') // km/h
 				{
 					$_speed *= 3.6;
-				} 
-				
-				if ($uom == '1')
-				{
-					// Miles and feet
-					$points_graph .= '['.((float)$p[3]*0.000621371192).','.((float)$p[2]*3.2808399).','.$_speed.'],';	
-				}
-				else
-				{
-					$points_graph .= '['.(float)$p[3].','.(float)$p[2].','.$_speed.'],';		
-				}
-			}		
+				} 				
+			
+				$points_graph .= '['.$_dist.','.$_ele.','.$_speed.'],';	
+			}
+			else {
+				$points_graph .= '['.$_dist.','.$_ele.'],';	
+			}
+			
 		}
-		else
-		{
-		
-			foreach ($points as $p) {
-				$points_maps .= '['.(float)$p[0].','.(float)$p[1].'],';
-				
-				if ($uom == '1')
-				{
-					// Miles and feet
-					$points_graph .= '['.((float)$p[3]*0.000621371192).','.((float)$p[2]*3.2808399).'],';	
-				}
-				else
-				{
-					$points_graph .= '['.(float)$p[3].','.(float)$p[2].'],';		
-				}
-			}		
 
-		}
 		
 		if ($showW == true)
 		{
diff --git a/wp-gpx-maps_admin_settings.php b/wp-gpx-maps_admin_settings.php
index 823baa0..4149c87 100644
--- a/wp-gpx-maps_admin_settings.php
+++ b/wp-gpx-maps_admin_settings.php
@@ -78,8 +78,9 @@
 			<th scope="row">Unit of measure:</th>
 			<td>
 				<select name='wpgpxmaps_unit_of_measure'>
-					<option value="0" <?php if ($uom == '0') echo 'selected'; ?>>meters</option>
-					<option value="1" <?php if ($uom == '1') echo 'selected'; ?>>miles/feet</option>
+					<option value="0" <?php if ($uom == '0') echo 'selected'; ?>>meters/meters</option>
+					<option value="1" <?php if ($uom == '1') echo 'selected'; ?>>feet/miles</option>
+					<option value="2" <?php if ($uom == '2') echo 'selected'; ?>>meters/kilometers</option>
 				</select>
 			</td>
 		</tr>