- removed get_screenshot_img() function definition from appview.php

- removed get_screenshot_img() function definition from bugs.php
- created include/screenshot.php which contains removed get_screenshot_img() function definition

include/screenshot.php

@@ -0,0 +1,40 @@
+<?php
+/********************************/
+/* screenshot related functions */
+/********************************/
+
+/**
+ * Get a random image for a particular version of an app.
+ * If the version is not set, get a random app image 
+ */
+function get_screenshot_img($appId, $versionId="") 
+{
+    if($versionId) 
+    {
+        $result = mysql_query("SELECT *, RAND() AS rand FROM appData WHERE appId = $appId AND versionId = $versionId AND type = 'image' ORDER BY rand");
+    }
+    else {
+       $result = mysql_query("SELECT *, RAND() AS rand FROM appData WHERE appId = $appId AND type = 'image' ORDER BY rand");
+    }
+    
+    if(!$result || !mysql_num_rows($result))
+    {
+        $imgFile = "<img src='".BASE."images/no_screenshot.gif' alt='No Screenshot' />";
+    }
+    else
+    {
+        $ob = mysql_fetch_object($result);
+        $imgFile = "<img src='appimage.php?imageId=$ob->id&width=128&height=128' ".
+                   "alt='$ob->description' />";
+    }
+    
+    $img = html_frame_start("",'128','',2);
+    if($versionId || mysql_num_rows($result))
+        $img .= "<a href='screenshots.php?appId=$appId&versionId=$versionId'>$imgFile</a>";
+    else // no link for adding app screenshot as screenshots are linked to versions
+        $img .= $imgFile; 
+    $img .= html_frame_end()."<br />";
+    
+    return $img;
+}
+?>