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diff --git a/protected/extensions/egmap/EGMapBounds.php b/protected/extensions/egmap/EGMapBounds.php
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+++ b/protected/extensions/egmap/EGMapBounds.php
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+<?php
+
+/**
+ * 
+ * EGMapBounds Class
+ * Modified by Antonio Ramirez Cobos
+ * for Yii to integrate class as Extension
+ * 
+ * @since 2010-12-22 Antonio Ramirez
+ * @link http://www.ramirezcobos.com
+ * 
+ * GoogleMap Bounds
+ * @author Fabrice Bernhard
+ * 
+ * @copyright 
+ * info as this library is a modified version of Fabrice Bernhard 
+ * 
+ * Copyright (c) 2008 Fabrice Bernhard
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+ * and associated documentation files (the "Software"), to deal in the Software without restriction, 
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+ * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
+ * subject to the following conditions:
+ * The above copyright notice and this permission notice shall be included in all copies or substantial 
+ * portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+ * NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+class EGMapBounds {
+
+	/**
+	 * 
+	 * South West EGMapCoord
+	 * @var EGMapCoord
+	 */
+	protected $sw = null;
+
+	/**
+	 * 
+	 * North East EGMapCoord
+	 * @var EGMapCoord
+	 */
+	protected $ne = null;
+
+	/**
+	 * Create a new Bounds object
+	 *
+	 * @param EGMapCoord $nw
+	 * @param EGMapCoord $se
+	 */
+	public function __construct(EGMapCoord $sw = null, EGMapCoord $ne = null)
+	{
+		if (is_null($sw))
+		{
+			$sw = new EGMapCoord();
+		}
+		if (is_null($ne))
+		{
+			$ne = new EGMapCoord();
+		}
+		$this->sw = $sw;
+		$this->ne = $ne;
+	}
+
+	/**
+	 * 
+	 * @return EGMapCoord object
+	 */
+	public function getNorthEast()
+	{
+
+		return $this->ne;
+	}
+
+	/**
+	 * 
+	 * @return EGMapCoord object
+	 */
+	public function getSouthWest()
+	{
+		return $this->sw;
+	}
+
+	/**
+	 * 
+	 * Creates EGMapCoords (bounds) from a string representation
+	 * of Lat,Lon values
+	 * @param string $string ((48.82415805606007,%202.308330535888672),%20(48.867086142850226,%202.376995086669922))
+	 */
+	static public function createFromString($string)
+	{
+		preg_match('/\(\((.*?)\), \((.*?)\)\)/', $string, $matches);
+		if (count($matches) == 3)
+		{
+			$sw = EGMapCoord::createFromString($matches[1]);
+			$ne = EGMapCoord::createFromString($matches[2]);
+			if (!is_null($sw) && !is_null($ne))
+			{
+
+				return new EGMapBounds($sw, $ne);
+			}
+
+			return null;
+		}
+	}
+
+	/**
+	 * Google String representations
+	 *
+	 * @return string
+	 * @author fabriceb
+	 * @since Feb 17, 2009 fabriceb
+	 */
+	public function __toString()
+	{
+
+		return '((' . $this->getSouthWest()->getLatitude() . ', ' . $this->getSouthWest()->getLongitude() . '), (' . $this->getNorthEast()->getLatitude() . ', ' . $this->getNorthEast()->getLongitude() . '))';
+	}
+	
+	/**
+	 *
+	 * @return string LatLngBounds constructor
+	 */
+	public function toJs()
+	{
+		return 'new google.maps.LatLngBounds('.$this->getSouthWest()->toJs().','.$this->getNorthEast()->toJs().')';
+	}
+
+	/**
+	 * Get the latitude of the center of the zone
+	 *
+	 * @return integer
+	 * @author fabriceb
+	 * @since 2008-12-03 
+	 */
+	public function getCenterLat()
+	{
+		if (is_null($this->getSouthWest()) || is_null($this->getNorthEast()))
+		{
+
+			return null;
+		}
+
+		return floatval(($this->getSouthWest()->getLatitude() + $this->getNorthEast()->getLatitude()) / 2);
+	}
+
+	/**
+	 * Get the longitude of the center of the zone
+	 *
+	 * @return integer
+	 * @author fabriceb
+	 * @since 2008-12-03 
+	 */
+	public function getCenterLng()
+	{
+		if (is_null($this->getSouthWest()) || is_null($this->getNorthEast()))
+		{
+
+			return null;
+		}
+
+		return floatval(($this->getSouthWest()->getLongitude() + $this->getNorthEast()->getLongitude()) / 2);
+	}
+
+	/**
+	 * Get the coordinates of the center of the zone
+	 *
+	 * @return EGMapCoord
+	 * @author fabriceb
+	 * @since 2008-12-03 
+	 */
+	public function getCenterCoord()
+	{
+
+		return new EGMapCoord($this->getCenterLat(), $this->getCenterLng());
+	}
+
+	/**
+	 * Hauteur du carré
+	 *
+	 * @return float
+	 * @author fabriceb
+	 * @since Feb 17, 2009 fabriceb
+	 */
+	public function getHeight()
+	{
+
+		return abs($this->getNorthEast()->getLatitude() - $this->getSouthWest()->getLatitude());
+	}
+
+	/**
+	 * Largeur du carré
+	 *
+	 * @return float
+	 * @author fabriceb
+	 * @since Feb 17, 2009 fabriceb
+	 */
+	public function getWidth()
+	{
+
+		return abs($this->getNorthEast()->getLongitude() - $this->getSouthWest()->getLongitude());
+	}
+
+	/**
+	 * Does a homthety transformtion on the bounds, centered on the center of the bounds
+	 *
+	 * @param float $factor
+	 * @return EGMapBounds $bounds
+	 * @author fabriceb
+	 * @since Feb 17, 2009 fabriceb
+	 */
+	public function getHomothety($factor)
+	{
+		$bounds = new EGMapBounds();
+		$lat = $this->getCenterLat();
+		$lng = $this->getCenterLng();
+		$bounds->getNorthEast()->setLatitude($factor * $this->getNorthEast()->getLatitude() + $lat * (1 - $factor));
+		$bounds->getSouthWest()->setLatitude($factor * $this->getSouthWest()->getLatitude() + $lat * (1 - $factor));
+		$bounds->getNorthEast()->setLongitude($factor * $this->getNorthEast()->getLongitude() + $lng * (1 - $factor));
+		$bounds->getSouthWest()->setLongitude($factor * $this->getSouthWest()->getLongitude() + $lng * (1 - $factor));
+
+		return $bounds;
+	}
+
+	/**
+	 * gets zoomed out bounds
+	 *
+	 * @param integer $zoom_coef
+	 * @return EGMapBounds
+	 * @author fabriceb
+	 * @since Feb 18, 2009 fabriceb
+	 */
+	public function getZoomOut($zoom_coef)
+	{
+		if ($zoom_coef > 0)
+		{
+			$bounds = $this->getHomothety(pow(2, $zoom_coef));
+
+			return $bounds;
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Returns the most appropriate zoom to see the bounds on a map with min(width,height) = $min_w_h
+	 *
+	 * @param integer $min_w_h width or height of the map in pixels
+	 * @return integer
+	 * @author fabriceb
+	 * @since Feb 18, 2009 fabriceb
+	 */
+	public function getZoom($min_w_h, $default_zoom = 14)
+	{
+		$infinity = 999999999;
+		$factor_h = $infinity;
+		$factor_w = $infinity;
+
+		/*
+
+		  formula: the width of the bounds in "pixels" is pix_w * 2^z
+		  We want pix_w * 2^z to fit in min_w_h so we are looking for
+		  z = round ( log2 ( min_w_h / pix_w  ) )
+		 */
+
+		$sw_lat_pix = EGMapCoord::fromLatToPix($this->getSouthWest()->getLatitude(), 0);
+		$ne_lat_pix = EGMapCoord::fromLatToPix($this->getNorthEast()->getLatitude(), 0);
+		$pix_h = abs($sw_lat_pix - $ne_lat_pix);
+		if ($pix_h > 0)
+		{
+			$factor_h = $min_w_h / $pix_h;
+		}
+
+		$sw_lng_pix = EGMapCoord::fromLngToPix($this->getSouthWest()->getLongitude(), 0);
+		$ne_lng_pix = EGMapCoord::fromLngToPix($this->getNorthEast()->getLongitude(), 0);
+		$pix_w = abs($sw_lng_pix - $ne_lng_pix);
+		if ($pix_w > 0)
+		{
+			$factor_w = $min_w_h / $pix_w;
+		}
+
+		$factor = min($factor_w, $factor_h);
+
+		// bounds is one point, no zoom can be determined
+		if ($factor == $infinity)
+		{
+
+			return $default_zoom;
+		}
+
+		return round(log($factor, 2));
+	}
+
+	/**
+	 *
+	 * Returns the boundaries that the others have
+	 * 
+	 * @param EGMapBounds[] $boundss
+	 * @param float $margin
+	 * @return EGMapBounds
+	 * @author fabriceb
+	 * @since Feb 18, 2009 fabriceb
+	 */
+	public static function getBoundsContainingAllBounds($boundss, $margin = 0)
+	{
+		$min_lat = 1000;
+		$max_lat = -1000;
+		$min_lng = 1000;
+		$max_lng = -1000;
+		foreach ($boundss as $bounds)
+		{
+			$min_lat = min($min_lat, $bounds->getSouthWest()->getLatitude());
+			$min_lng = min($min_lng, $bounds->getSouthWest()->getLongitude());
+			$max_lat = max($max_lat, $bounds->getNorthEast()->getLatitude());
+			$max_lng = max($max_lng, $bounds->getNorthEast()->getLongitude());
+		}
+
+		if ($margin > 0)
+		{
+			$min_lat = $min_lat - $margin * ($max_lat - $min_lat);
+			$min_lng = $min_lng - $margin * ($max_lng - $min_lng);
+			$max_lat = $max_lat + $margin * ($max_lat - $min_lat);
+			$max_lng = $max_lng + $margin * ($max_lng - $min_lng);
+		}
+
+		$bounds = new EGMapBounds(new EGMapCoord($min_lat, $min_lng), new EGMapCoord($max_lat, $max_lng));
+		return $bounds;
+	}
+
+	/**
+	 * Retuns bounds containg an array of coordinates
+	 *
+	 * @param EGMapCoord[] $coords
+	 * @param float $margin
+	 * @return EGMapBounds
+	 * @author fabriceb
+	 * @since Mar 13, 2009 fabriceb
+	 */
+	public static function getBoundsContainingCoords($coords, $margin = 0)
+	{
+		$min_lat = 1000;
+		$max_lat = -1000;
+		$min_lng = 1000;
+		$max_lng = -1000;
+		foreach ($coords as $coord)
+		{
+			/* @var $coord EGMapCoord */
+			$min_lat = min($min_lat, $coord->getLatitude());
+			$max_lat = max($max_lat, $coord->getLatitude());
+			$min_lng = min($min_lng, $coord->getLongitude());
+			$max_lng = max($max_lng, $coord->getLongitude());
+		}
+
+		if ($margin > 0)
+		{
+			$min_lat = $min_lat - $margin * ($max_lat - $min_lat);
+			$min_lng = $min_lng - $margin * ($max_lng - $min_lng);
+			$max_lat = $max_lat + $margin * ($max_lat - $min_lat);
+			$max_lng = $max_lng + $margin * ($max_lng - $min_lng);
+		}
+		$bounds = new EGMapBounds(new EGMapCoord($min_lat, $min_lng), new EGMapCoord($max_lat, $max_lng));
+
+		return $bounds;
+	}
+
+	/**
+	 *
+	 * @param GMapMarker[] $markers array of Markers
+	 * @param float $margin margin factor for the bounds
+	 * @return EGMapBounds
+	 * @author fabriceb
+	 * @since 2009-05-02
+	 * @since 2011-01-25 modified by Antonio Ramirez
+	 *
+	 * */
+	public static function getBoundsContainingMarkers($markers, $margin = 0)
+	{
+		$coords = array();
+		foreach ($markers as $marker)
+		{
+			array_push($coords, $marker->position);
+		}
+
+		return EGMapBounds::getBoundsContainingCoords($coords, $margin);
+	}
+
+	/**
+	 *
+	 * @param GMapPolygon[] $polygons array of Polygons
+	 * @param float $margin margin factor for the bounds
+	 * @return EGMapBounds
+	 * @author Matt Kay
+	 * @since 2011-03-10
+	 * 	Added this function based on getBoundsContainingMarkers
+	 *
+	 * */
+	public static function getBoundsContainingPolygons($polygons, $margin = 0)
+	{
+		$coords = array();
+		foreach ($polygons as $polygon)
+		{
+			// merge LatLng arrays
+			array_merge($coords, $polygon->getCoords());
+		}
+
+		return EGMapBounds::getBoundsContainingCoords($polygon->getCoords(), $margin);
+	}
+	
+	/**
+	 * Calculate the bounds corresponding to a specific center and zoom level for a give map size in pixels
+	 * 
+	 * @param EGMapCoord $center_coord
+	 * @param integer $zoom
+	 * @param integer $width
+	 * @param integer $height
+	 * @return EGMapBounds
+	 * @author fabriceb
+	 * @since Jun 2, 2009 fabriceb
+	 */
+	public static function getBoundsFromCenterAndZoom(EGMapCoord $center_coord, $zoom, $width, $height = null)
+	{
+		if (is_null($height))
+		{
+			$height = $width;
+		}
+
+		$center_lat = $center_coord->getLatitude();
+		$center_lng = $center_coord->getLongitude();
+
+		$pix = EGMapCoord::fromLatToPix($center_lat, $zoom);
+		$ne_lat = EGMapCoord::fromPixToLat($pix - round(($height - 1) / 2), $zoom);
+		$sw_lat = EGMapCoord::fromPixToLat($pix + round(($height - 1) / 2), $zoom);
+
+		$pix = EGMapCoord::fromLngToPix($center_lng, $zoom);
+		$sw_lng = EGMapCoord::fromPixToLng($pix - round(($width - 1) / 2), $zoom);
+		$ne_lng = EGMapCoord::fromPixToLng($pix + round(($width - 1) / 2), $zoom);
+
+		return new EGMapBounds(new EGMapCoord($sw_lat, $sw_lng), new EGMapCoord($ne_lat, $ne_lng));
+	}
+
+	/**
+	 * 
+	 * @param EGMapCoord $gmap_coord
+	 * @return boolean $is_inside
+	 * @author fabriceb
+	 * @since Jun 2, 2009 fabriceb
+	 */
+	public function containsEGMapCoord(EGMapCoord $gmap_coord)
+	{
+		$is_inside =
+			(
+			$gmap_coord->getLatitude() < $this->getNorthEast()->getLatitude()
+			&&
+			$gmap_coord->getLatitude() > $this->getSouthWest()->getLatitude()
+			&&
+			$gmap_coord->getLongitude() < $this->getNorthEast()->getLongitude()
+			&&
+			$gmap_coord->getLongitude() > $this->getSouthWest()->getLongitude()
+			);
+
+		return $is_inside;
+	}
+
+}