1 files changed, 45 insertions, 0 deletions
diff --git a/include/game.js b/include/game.js
new file mode 100644
index 0000000..862d8b6
--- /dev/null
+++ b/include/game.js
@@ -0,0 +1,45 @@
+/* some code to highlight the current trick and to switch between different tricks */
+/* which trick is currently highlighted*/
+var current=0;
+
+/* do the higlighting */
+function hl(num) {
+    if(document.getElementById){
+	var i;
+	for(i=0;i<14;i++){
+	    if(document.getElementById("trick"+i))
+		document.getElementById("trick"+i).style.display = 'none';
+	}
+	document.getElementById("trick"+num).style.display = 'block';
+	current=num;
+    }
+}
+
+/* highlight the last trick, useful when a page is called the first time*/
+function high_last(){
+    if(document.getElementById){
+	var i;
+	for(i=13;i>=0;i--) {
+	    if(document.getElementById("trick"+i))
+		{
+		    hl(i);
+		    current=i;
+		    break;
+		}
+	}
+    }
+}
+
+/* highlight the next trick */
+function hl_next()
+{
+    if(document.getElementById("trick"+(current+1)))
+	hl(current+1);
+}
+
+/* highlight the previous trick */
+function hl_prev()
+{
+    if(document.getElementById("trick"+(current-1)))
+	hl(current-1);
+}