diff --git a/README.md b/README.md
index 2f9352ea..bc23087e 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,8 @@ h5ai is provided under the terms of the [MIT License](http://github.com/lrsjng/h
 * updates es translation
 * custom headers/footers are now optional and disabled by default
 * fixes problems with folder recognition in the JS version
+* fixes include problems in PHP version
+* fixes path problems on servers running on Windows in PHP version
 
 
 ### v0.17 - *2011-11-28*
diff --git a/src/_h5ai/config.js b/src/_h5ai/config.js
index d0b7035e..ba29658f 100644
--- a/src/_h5ai/config.js
+++ b/src/_h5ai/config.js
@@ -106,6 +106,7 @@ var H5AI_CONFIG = {
 		 * Show thumbnails for image files.
 		 */
 		"showThumbs": true,
+		"thumbTypes": ["bmp", "gif", "ico", "image", "jpg", "png", "tiff"],
 
 		/*
 		 * Requires PHP on the server.
diff --git a/src/_h5ai/config.php b/src/_h5ai/config.php
index f901fa31..8096a5b2 100644
--- a/src/_h5ai/config.php
+++ b/src/_h5ai/config.php
@@ -12,9 +12,8 @@ $H5AI_CONFIG = array();
 /*
  * This configuration assumes that h5ai is installed
  * in the webroot directory of the Apache server.
- * Assumed to end with a slash.
  */
-$H5AI_CONFIG["ROOT_ABS_PATH"] = dirname(dirname(str_replace('\\', '/', __FILE__)));
+$H5AI_CONFIG["ROOT_ABS_PATH"] = safe_dirname(safe_dirname(__FILE__));
 
 /*
  * Files/folders that should not be listed. Specified
diff --git a/src/_h5ai/php/inc/Crumb.php b/src/_h5ai/php/inc/Crumb.php
index 9d10ab00..76ac81b8 100644
--- a/src/_h5ai/php/inc/Crumb.php
+++ b/src/_h5ai/php/inc/Crumb.php
@@ -11,7 +11,7 @@ class Crumb {
 		$this->parts = array();
 
 		$href = $h5ai->getAbsHref();
-		while ($href !== "/" && $href !== "//") {
+		while ($href !== "/") {
 			$this->parts[] = $href;
 			$href = safe_dirname($href, true);
 		}
diff --git a/src/_h5ai/php/inc/Extended.php b/src/_h5ai/php/inc/Extended.php
index f2b8ee7c..e8a47878 100644
--- a/src/_h5ai/php/inc/Extended.php
+++ b/src/_h5ai/php/inc/Extended.php
@@ -5,7 +5,7 @@ require_h5ai("/php/inc/Thumbnail.php");
 
 class Entry {
 
-	private $h5ai, $label, $absPath, $absHref, $date, $isFolder, $type, $size, $thumbTypes;
+	private $h5ai, $label, $absPath, $absHref, $date, $isFolder, $type, $size;
 
 
 	public function __construct($h5ai, $absPath, $absHref, $type = null, $label = null) {
@@ -25,8 +25,6 @@ class Entry {
 			$this->type = $type !== null ? $type : $this->h5ai->getType($this->absPath);
 			$this->size = filesize($this->absPath);
 		}
-
-		$this->thumbTypes = array("bmp", "gif", "ico", "image", "jpg", "png", "tiff");
 	}
 
 
@@ -59,7 +57,7 @@ class Entry {
 				}
 			}
 		}
-		if ($this->h5ai->showThumbs() && in_array($this->type, $this->thumbTypes)) {
+		if ($this->h5ai->showThumbs() && in_array($this->type, $this->h5ai->getThumbTypes())) {
 			$imgClass = " class='thumb' ";
 			$thumbnail = new Thumbnail($this->h5ai, $this->absHref, "square", 16, 16);
 			$thumbnail->create();
@@ -138,7 +136,7 @@ class Extended {
 	}
 
 
-	public function generateHeaders() {
+	private function generateHeaders() {
 
 		$html = "\t<li class='header'>\n";
 		$html .= "\t\t<a class='icon'></a>\n";
diff --git a/src/_h5ai/php/inc/H5ai.php b/src/_h5ai/php/inc/H5ai.php
index 98e88965..6d25807c 100644
--- a/src/_h5ai/php/inc/H5ai.php
+++ b/src/_h5ai/php/inc/H5ai.php
@@ -126,24 +126,27 @@ class H5ai {
 	}
 
 
+	public function normalizePath($path, $endWithSlash) {
+
+		return preg_match("#^(\w:)?/$#", $path) ? $path : (preg_replace('#/$#', '', $path) . ($endWithSlash ? "/" : ""));
+	}
+
+
 	public function getAbsHref($absPath = null, $endWithSlash = true) {
 
 		if ($absPath === null) {
 			return $this->absHref;
 		}
 
-		$absPath=substr($absPath, strlen($this->rootAbsPath));
+		$absPath = substr($absPath, strlen($this->rootAbsPath));
 
 		$parts = explode("/", $absPath);
 		$encodedParts = array();
 		foreach ($parts as $part) {
 			$encodedParts[] = rawurlencode($part);
 		}
-		$endodedAbsHref = implode("/", $encodedParts);
 
-		$endodedAbsHref = $this->rootAbsHref . $endodedAbsHref;
-
-		return $this->normalizePath($endodedAbsHref, $endWithSlash);
+		return $this->normalizePath($this->rootAbsHref . implode("/", $encodedParts), $endWithSlash);
 	}
 
 
@@ -153,7 +156,7 @@ class H5ai {
 			return $this->absPath;
 		}
 
-		$absHref=substr($absHref, strlen($this->rootAbsHref));
+		$absHref = substr($absHref, strlen($this->rootAbsHref));
 
 		return $this->normalizePath($this->rootAbsPath . "/" . rawurldecode($absHref), false);
 	}
@@ -165,6 +168,12 @@ class H5ai {
 	}
 
 
+	public function getThumbTypes() {
+
+		return $this->options["thumbTypes"];
+	}
+
+
 	public function getTitle() {
 
 		$title = $this->domain . rawurldecode($this->absHref);
@@ -233,12 +242,6 @@ class H5ai {
 	}
 
 
-	public function normalizePath($path, $endWithSlash) {
-
-		return $path === "/" ? "/" : (preg_replace('#/$#', '', $path) . ($endWithSlash ? "/" : ""));
-	}
-
-
 	public function startsWith($sequence, $start) {
 
 		return strcasecmp(substr($sequence, 0, strlen($start)), $start) === 0;
diff --git a/src/_h5ai/php/inc/Image.php b/src/_h5ai/php/inc/Image.php
index 198d04b3..ae71db64 100644
--- a/src/_h5ai/php/inc/Image.php
+++ b/src/_h5ai/php/inc/Image.php
@@ -78,7 +78,7 @@ class Image {
 	public function releaseDest() {
 
 		if (!is_null($this->dest)) {
-			imagedestroy($this->dest);
+			@imagedestroy($this->dest);
 			$this->dest = null;
 		}
 	}
@@ -87,7 +87,7 @@ class Image {
 	public function releaseSource() {
 
 		if (!is_null($this->source)) {
-			imagedestroy($this->source);
+			@imagedestroy($this->source);
 			$this->sourceFile = null;
 			$this->source = null;
 			$this->width = null;