Something

Slider.prototype.show = function(){	var parentElement = document.getElementById(this.parentElement);	var content = document.createElement("div");	content.style.width = this.contentWidth;	content.style.height = this.contentHeight;	content.style.background = "url("+this.items[0].image+")";	content.className = "SliderContent";	parentElement.appendChild(content);	var instance = this;	for(var i in this.items){		var link = document.createElement("div");		link.innerHTML = this.items[i].caption;		link.onMouseOver = "this.changeContent(i)";		parentElement.appendChild(link);		parentElement.lastChild.addEventListener("mouseover", function(){id = i; alert(id); Slider.changeContent(instance, i);}, false);	}}