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authorAndreas Unterkircher <unki@netshadow.at>2008-05-25 09:46:49 +0200
committerAndreas Unterkircher <unki@netshadow.at>2008-05-25 10:02:09 +0200
commit57a136513d1e5ef86acf49b934ea3e6eff26dbfd (patch)
tree6d0a20176f8b4e9055a4784e6ff649ea571377f8
parentdcc26041d1dd86d47516e143fd5e475e588180cf (diff)
added some comments to image-preloading code
Signed-off-by: Andreas Unterkircher <unki@netshadow.at>
-rw-r--r--phpfspot.js24
-rw-r--r--themes/default/templates/photo_index.tpl8
2 files changed, 20 insertions, 12 deletions
diff --git a/phpfspot.js b/phpfspot.js
index ebe1242..75d0ed7 100644
--- a/phpfspot.js
+++ b/phpfspot.js
@@ -660,17 +660,19 @@ function preloadPhotos(image_url) {
var waiting = 100;
var counting;
- lbImg=WSR_getElementsByClassName(document,"img","thumb");
- for(i=0;i<lbImg.length;i++){
- lbImg[i].src=image_url[i];
- // to not bomb the server with requests, give the page some time
- // to load the images one by one. if a image exceeds the timeout,
- // the next image will be loaded.
- if(lbImg[i].complete != undefined && lbImg[i].complete != true) {
- counting = 0;
- while(lbImg[i].complete != true && counting < timeout) {
- window.setTimeout("noop()", waiting);
- counting+=waiting;
+ lbImg = WSR_getElementsByClassName(document,"img","thumb");
+ if(lbImg != undefined) {
+ for(i=0;i<lbImg.length;i++){
+ lbImg[i].src=image_url[i];
+ // to not bomb the server with requests, give the page some time
+ // to load the images one by one. if a image exceeds the timeout,
+ // the next image will be loaded.
+ if(lbImg[i].complete != undefined && lbImg[i].complete != true) {
+ counting = 0;
+ while(lbImg[i].complete != true && counting < timeout) {
+ window.setTimeout("noop()", waiting);
+ counting+=waiting;
+ }
}
}
}
diff --git a/themes/default/templates/photo_index.tpl b/themes/default/templates/photo_index.tpl
index 7fe04ab..fa63b31 100644
--- a/themes/default/templates/photo_index.tpl
+++ b/themes/default/templates/photo_index.tpl
@@ -135,7 +135,13 @@
<br class="cb" />
<script type="text/javascript" language="JavaScript">
<!--
- /*** image preloading ***/
+ // image preloading
+ //
+ // these few javascript lines will try to speed up loading all the photo
+ // thumbnails. An array of all photos to display will be built written
+ // by the smarty-template. The js-code will then loop through this array
+ // and invoke loading of each photo. Sadly this does not work good on all
+ // browsers.
{ counter start=-1 }
var current;