remove script elements used for JSONP calls

lib/index.js

@@ -388,6 +388,7 @@
               , head = oDOC.head || oDOC.getElementsByTagName("head")
 
             // loading code borrowed directly from LABjs itself
+            // (now removes script elem when done and nullifies its reference --sjs)
             setTimeout(function () {
                 if ("item" in head) { // check if ref is still a live node list
                     if (!head[0]) { // append_to node not yet ready
@@ -403,6 +404,8 @@
                         return false
                     }
                     scriptElem.onload = scriptElem.onreadystatechange = null
+                    scriptElem.parentNode.removeChild(scriptElem)
+                    scriptElem = null
                     scriptdone = true
                 };
                 scriptElem.src = url