var indexIndex = {
	'#h-navigation ul li a img' : function(element){
	    element.onload = function(){
		    var imgs = this.parentNode.getElementsByTagName("img");
            var i = imgs[0];
            var newImage = new Image;
            newImage.src = i.src.replace('-off', '-on');
	    }
		element.onmouseover = function(){
		    var imgs = this.parentNode.getElementsByTagName("img");
            var i = imgs[0];
            i.src = i.src.replace('-off', '-on');
		}
		element.onmouseout = function(){
		    var imgs = this.parentNode.getElementsByTagName("img");
            var i = imgs[0];
		    i.src = i.src.replace('-on', '-off');
		}
	}
};

Behaviour.register(indexIndex);