diff --git a/index.html b/index.html
index 383e075..f49c83c 100644
--- a/index.html
+++ b/index.html
@@ -11,10 +11,10 @@
         <div id="main">
             <div id="title">
                 <h1>S-Block</h1>
-                <button onclick="run()">▶️</button>
-                <button onclick="build()">🔨</button>
-                <button onclick="load()">📄</button>
-                <button onclick="save()">💾</button>
+                <button id="run">▶️</button>
+                <button id="build">🔨</button>
+                <button id="load">📄</button>
+                <button id="save">💾</button>
             </div>
             
             <div id="editor" contenteditable="true" onchange="addTips()">