diff --git a/layout.html b/layout.html
index 2b68e45..99010fc 100755
--- a/layout.html
+++ b/layout.html
@@ -880,8 +880,14 @@
 				e.preventDefault();
 				const new_block_dialog = document.getElementById("new_block_dialog");
 				const new_block_header = document.getElementById("new_block_dialog_header");
+				const new_block_start_time_input = document.getElementById("new_block_start_time");
 				const block_start_time = e.target.parentNode.firstElementChild.innerHTML;
 				new_block_header.innerHTML = "New program block for " + block_start_time;
+				new_block_start_time_input.value = block_start_time;
+				new_block_start_time_input.setAttribute("disabled", "disabled");
+
+				const new_block_dialog_id = document.getElementById("new_block_dialog_id");
+				new_block_dialog_id.value = randomUUID();
 
 				const new_block_close_button = document.getElementById("new_block_dialog_close_button");
 				new_block_close_button.addEventListener("click", (event) => {