Initial revision

1 files changed, 52 insertions, 0 deletions

diff --git a/skins/default/pngbehavior.htc b/skins/default/pngbehavior.htc
new file mode 100644
index 000000000..553699a2f
--- /dev/null
+++ b/skins/default/pngbehavior.htc
@@ -0,0 +1,52 @@
+<public:component>
+<public:attach event="onpropertychange" onevent="propertyChanged()" />
+<script>
+
+var supported = /MSIE (5\.5)|[6789]/.test(navigator.userAgent) && navigator.platform == "Win32";
+var realSrc;
+var blankSrc = "skins/default/images/blank.gif";
+
+if (supported) fixImage();
+
+function propertyChanged() {
+   if (!supported) return;
+
+   var pName = event.propertyName;
+   if (pName != "src") return;
+   // if not set to blank
+   if ( ! new RegExp(blankSrc).test(src))
+      fixImage();
+};
+
+function fixImage() {
+   // get src
+   var src = element.src;
+
+   // check for real change
+   if (src == realSrc) {
+      element.src = blankSrc;
+      return;
+   }
+
+   if ( ! new RegExp(blankSrc).test(src)) {
+      // backup old src
+      realSrc = src;
+      element._original_src = realSrc;
+   }
+
+   // test for png
+   if ( /\.png$/.test( realSrc.toLowerCase() ) ) {
+      // set blank image
+      element.src = blankSrc;
+      // set filter
+      element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" +
+                                     src + "',sizingMethod='scale')";
+   }
+   else {
+      // remove filter
+      element.runtimeStyle.filter = "";
+   }
+}
+
+</script>
+</public:component>
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