--- a/search.js	Mon Oct 12 15:36:13 2015 +0200
+++ b/search.js	Wed Oct 14 11:01:26 2015 +0200
@@ -1,6 +1,4 @@
-$(document).ready(function(){
-	initSection();
-});
+
 function initSection(){ //Hide sections if there are more than 5
 	$("td div.section").hide();
 	for(var i=1; i<=5; i++){
@@ -29,3 +27,57 @@
 		}
 	});
 }
+
+function submitenter(e)
+{
+	var keycode; 
+	if (window.event) keycode = window.event.keyCode; 
+	else if (e) keycode = e.which; 
+	else return true;
+
+	if (keycode == 13) { 
+		checkPassword();
+		return false; 
+	} else {
+		return true; 
+	}
+}
+
+function checkPassword() { 
+	var password = document.getElementById("pass").value;
+	$.ajax({
+		url : 'search_function.php',
+        async : false,
+	    type : 'POST',
+        data : 'func=checkPassword'+'&password='+password,
+        success: function (e) {
+        },
+        error: function (e) {
+            alert("Internal error when checking password.");
+        }
+    }).done(function(result) {
+    	//console.log("password checking result: "+result);
+    	if (result == 1) {
+    		closePopup();
+    		$("#search").show();
+    	} else {
+    		// still showing popup
+    		alert("Wrong password!");
+    		showPopup();
+    		$("#search").hide();
+    	}
+    });
+};
+
+function showPopup() {
+	// clear previous input
+	if (document.getElementById("pass")) {
+		document.getElementById("pass").value = "";	
+		document.getElementById("popup").style.display = "block";
+	}
+}
+function closePopup() {
+	if (document.getElementById("pass")) {
+		document.getElementById("popup").style.display = "none";
+	}
+}
\ No newline at end of file