1. save kml records based on timestamp rather than unique icon name

js/kml.js

@@ -39,6 +39,9 @@ function generateKML(nodes){
         '     <tilt>'+nodes[i].tilt+'</tilt>',
         '     <roll>'+nodes[i].roll+'</roll>',
         '   </Camera>',
+        '   <TimeStamp>',
+        '     <when>'+nodes[i].timestamp+'</when>',
+        '   </TimeStamp>',
         '   <Icon>',
         '     <href>'+nodes[i].href+'</href>',
         '   </Icon>'].join('\n');

js/ui_init.js

@@ -311,7 +311,8 @@ function parse_light_init_response(response,state,mode){
       name        : $(response).find("name").text(),
       description : $(response).find("Camera").find("description").text(),
       visibility  : $(response).find("visibility").text(),
-      href        : $(response).find("Icon").find("href").text()
+      href        : $(response).find("Icon").find("href").text(),
+      timestamp   : $(response).find("TimeStamp").find("when").text(),
   };
 
   if (state=="init"){

modify_kml.php

@@ -58,9 +58,10 @@ $old_PhotoOverlay = $target_xml->Document->PhotoOverlay;
 
 foreach ($new_PhotoOverlay as $new_node) {
     foreach ($old_PhotoOverlay as $old_node) {
-	$old_str = "{$old_node->Icon->href}";
-	$new_str = "{$new_node->Icon->href}";
+	$old_str = "{$old_node->TimeStamp->when}";
+	$new_str = "{$new_node->TimeStamp->when}";
 	//if ("{$new_node->Icon->href}"=="{$old_node->Icon->href}") {
+	//if ($new_str==$old_str) {
 	if (strstr($new_str,$old_str)!=false) {
 	    $old_node->name              = $new_node->name;
 	    $old_node->description       = $new_node->description;