diff --git a/otamesi.js b/otamesi.js
index 1b23c9b..540d43f 100644
--- a/otamesi.js
+++ b/otamesi.js
@@ -7,7 +7,20 @@
 	   melon_element.innerHTML += "メロンとメロンパンくらいね！！\n";
    }
  }
-function mieru() {
-  var x = document.getElementById("mienai")
-  x.style.backgroundColor = "transparent";
+
+function show(ev) {
+  var element = (ev.target||ev.srcElement);
+  element.style.backgroundColor = "transparent";
 }
+
+function mieru() {
+  vat i = 0;
+  var x = document.getElementsByTagName("span")
+  for (var i = 0; i < x.length; i++) {
+    var item = x[i];
+    if (item.getAttribute("class") == "check") {
+      item.addEventListener("click", show, false);
+    }
+  }
+}
+window.onload = mieru;