implement basic functionality of contact via form->smtp

static/contact.js

@@ -0,0 +1,35 @@
+function submitForm(){
+
+    /* show the waiting dialog */
+    dialog = document.getElementById("waiting-dialog")
+    dialog.style.disply = "block"
+    setMainBackgroundOpacity(0.5)
+
+    /* submit the form */
+    xhr = new XMLHttpRequest();
+    xhr.open("POST", "/your/url/name.php"); 
+    xhr.onload = 
+    formData = new FormData(document.getElementById("contact-form")); 
+    xhr.send(formData);
+
+    mainContainer = document.getElementById("main-container")
+    mainContainer.style.opacity = 0.5
+
+    window.location.href = "/thanks"
+    // after x seconds forward to thx
+
+}
+
+function formSubmitFinished(event){ 
+    if(event.target.status != 200){
+        showErrorMessage(); // blocking
+        setMainBackgroundOpacity(0.5)
+    }else{
+        window.location.href = "/thanks"
+    }
+}
+
+function setMainBackgroundOpacity(opacity){
+    mainContainer = document.getElementById("main-container")
+    mainContainer.style.opacity = opacity
+}