diff -r f2123b4487e9 -r 01415303372e web/static/res/js/incchoice.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/static/res/js/incchoice.js	Tue Dec 11 17:39:04 2012 +0100
@@ -0,0 +1,50 @@
+var effectSpeed = 8;
+
+function IncChoice()
+{
+	this.currentWorldIndex = -1;
+	this.lastWorldIndex = -1;
+
+	this.setMosaicEffect = function(images1, images2, nextUrl)
+	{
+		// Choose 2 image for the effect
+		var image1 = images1[incMosaic.randomInt(0, images1.length)];
+		var image2 = images2[incMosaic.randomInt(0, images2.length)];
+        incMosaic.addImageUrl("static/res/img/" + image1);
+        incMosaic.addImageUrl("static/res/img/" + image2);
+
+        // Start mosaic effect
+    	incMosaic.start("mosaic", effectSpeed, 9, 5, false, true, function() { location.href = nextUrl;});        
+	};
+
+	this.selectWord = function(word)
+	{
+		if (this.currentWorldIndex == this.lastWorldIndex) {
+			// Don't set the word 2 times
+			return;
+		}
+
+		// Start the mosaic effect
+		incMosaic.goEffect();
+
+		// Fade the text
+		$('.big_txt').animate({opacity: 0}, 20000 * 1 / effectSpeed);
+
+		// Save the word
+		this.setCookie("niv1_world" + this.currentWorldIndex, word);
+		this.lastWorldIndex = this.currentWorldIndex;
+		//++this.currentWorldIndex;
+	};
+
+	this.setCookie = function(name, value)
+	{
+		$.removeCookie(name);
+		$.cookie(name, value, { expires: 7, path: '/' });    	
+    };
+
+	this.getCookie = function(name) {
+		return $.cookie(name);
+	};
+}
+
+var incChoice = new IncChoice();
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