When setting up dojo connections to onmouseover and onmouseout, and then adding content on mouseover, dojo fires the onmouseout event at once, since there is new content. Example:

dojo.query(".star").parent().connect("onmouseover", function() {
    dojo.query("span", this).addContent("<img src='star-hover.jpg'>");
}).connect("onmouseout", function() {
    dojo.destroy(dojo.query("img", this)[0]);
});

The parent() is a <td>, and the .star is a span. I want to add the hover image whenever the user hovers the table cell. It works as long as the cursor doesn't hover the image, because that will result in some serious blinking. Is this deliberate? And is there a way around it?