moves scripts to dedicated folder

scripts/gallery.js

@@ -0,0 +1,34 @@
+var currentSlide = 0;
+var allSlides = document.querySelectorAll(".programGallery");
+
+
+window.nextSlide = function nextSlide(){
+    currentSlide++;
+    updateSlide();
+}
+
+window.lastSlide = function lastSlide(){
+    currentSlide--;
+    updateSlide();
+}
+
+function updateSlide(){
+    if (currentSlide > allSlides.length-1){
+        currentSlide = 0;
+    } else if (currentSlide < 0){
+        currentSlide = allSlides.length-1;
+    }
+    
+    hideAll();
+    allSlides[currentSlide].style.display = "grid";
+
+}
+
+function hideAll(){
+    for (var i = 0; i < allSlides.length; i++){
+        allSlides[i].style.display = "none";
+    }
+}
+
+hideAll()
+updateSlide();