diff --git a/static/index.html b/static/index.html
index 91d49c0..1ce6517 100644
--- a/static/index.html
+++ b/static/index.html
@@ -22,7 +22,7 @@ html, body {
 		<script type="text/javascript" src="/sdk.js"></script>
         <script type="text/javascript">
 "use strict";
-contented.enableDrop( $("#surrogate-area")[0], "", function(itm) {
+contented.init("#surrogate-area", function(itm) {
     console.log(itm);
 });
 		</script>
diff --git a/static/sdk.js b/static/sdk.js
index e99723b..6ecf765 100644
--- a/static/sdk.js
+++ b/static/sdk.js
@@ -1,8 +1,10 @@
 ;"use strict";
 
-var contented = (function($) {
+var contented = (function($, currentScriptPath) {
     "use strict";
 
+    var baseURL = currentScriptPath.replace('sdk.js', '');
+
     /**
      * contented_SupportsDrop returns whether drag-and-drop is supported by this
      * browser.
@@ -17,19 +19,23 @@ var contented = (function($) {
      * contented_EnableDrop enables drag-and-drop upload on a DOM element.
      * The class "is-dragover" will be toggled on the target element.
      *
-     * @param DOMElement element       Drop target
-     * @param string     baseURL       Base URL of the contented server
+     * @param any        element       Drop target (string selector / DOMElement / jQuery)
      * @param Function   onUploaded    Called with a property object for every uploaded file
      * @param Function   onClose       Called when the widget should be destroyed
      */
-    var contented_EnableDrop = function(element, baseURL, onUploaded, onClose) {
+    var contented_EnableDrop = function(elementSelector, onUploaded, onClose) {
         onUploaded = onUploaded || function(){};
         onClose = onClose || function(){};
 
+        if ($(elementSelector).length != 1) {
+            return; // should only find one element
+        }
+        var element = $(elementSelector)[0];
+
         // <input type="hidden" name="MAX_FILE_SIZE" value="` + ret.MaxUploadBytes + `" /> 
 
         // Create a new div for ourselves on top of the existing area
-        $.get(baseURL + "/about", function(ret) {
+        $.get(baseURL + "about", function(ret) {
             $("title").text( ret.AppTitle );
 
             var extraText = "";
@@ -37,7 +43,7 @@ var contented = (function($) {
                 extraText = " (max " + Math.floor(ret.MaxUploadBytes / (1024*1024)) + " MiB)";
             }
 
-            $.get(baseURL + "/widget.html", function(widgetHtml) {
+            $.get(baseURL + "widget.html", function(widgetHtml) {
 
                 var $f = $("<div>").html(widgetHtml);
                 $f.find(".contented-extratext").text(extraText);
@@ -147,7 +153,20 @@ var contented = (function($) {
 
     return {
         'supportsDrop': contented_SupportsDrop,
-        'enableDrop': contented_EnableDrop
+        'init': contented_EnableDrop
     };
 
-})(jQuery);
+})(
+    jQuery,
+    (function() {
+        
+        // Determine current script path
+        // @ref https://stackoverflow.com/a/26023176
+        var scripts = document.querySelectorAll( 'script[src]' );
+        var currentScript = scripts[ scripts.length - 1 ].src;
+        var currentScriptChunks = currentScript.split( '/' );
+        var currentScriptFile = currentScriptChunks[ currentScriptChunks.length - 1 ];
+    
+        return currentScript.replace( currentScriptFile, '' );
+    })()
+);