added lunchuman

subsites/lunchuman/static/front.js

@@ -0,0 +1,19 @@
+create_listener = function(elem) {
+    var listener = function() {
+        elem.value = '';
+        elem.removeEventListener('focus', listener, false);
+    };
+    return listener;
+}
+
+prepare_delete_onfocus = function() {
+    var elems, elemI, elem, listener;
+    elems = document.getElementsByClassName('deleteonfocus');
+    for (elemI in elems) {
+        elem = elems[elemI];
+        elem.addEventListener('focus', create_listener(elem), false);
+    }
+}
+
+window.onload = function(event) {prepare_delete_onfocus();}
+