* unnötige preventDefault() entfernt

* optisches Klick-Feedback hinzugefügt

script.js

@@ -1,22 +1,28 @@
 dropzone = document.getElementById('dropzone');
 
 dropzone.addEventListener('dragover', function(e) {
-	e.preventDefault();
-
 	this.classList.remove('nodrop');
 	this.classList.add('drop');
 });
 
 dropzone.addEventListener('dragleave', function(e) {
-	e.preventDefault();
-
 	this.classList.remove('drop');
 	this.classList.add('nodrop');
 });
 
-dropzone.addEventListener('click', function(e) {
-	e.preventDefault();
+dropzone.addEventListener('mousedown', function(e) {
+	this.classList.remove('nodrop');
+	this.classList.add('drop');
+	console.log('click');
+});
 
+dropzone.addEventListener('mouseup', function(e) {
+	this.classList.remove('drop');
+	this.classList.add('nodrop');
+	console.log('unclick');
+});
+
+dropzone.addEventListener('click', function(e) {
 	input = document.createElement('input');
 	input.type = 'file';
 	input.click();