When using any hover effect, even an empty one like this:

$(function(){
    $("li").hover( function () {/* nothing */}, function () {/* nothing */} );
});

On HTML like this:

<ul>
<li><a href="#">Hello</a> world!</li>
<li><a href="#">Hello</a> world!</li>
<li><a href="#">Hello</a> world!</li>
</ul>

then, when hovering cursor from non-link content to link, the cursor does not change shape. It should change from simple arrow to pointing hand, but does not.

This happens only in Opera (tried both Windows and Linux versions).

Simple solution: hover() should return true instead of false when moused over a sub-element.

Example fix:

jQuery.fn.extend({
	hover: function(f,g) {
		// A private function for handling mouse 'hovering'
		function handleHover(e) {
			// Check if mouse(over|out) are still within the same parent element
			var p = e.relatedTarget;
			// Traverse up the tree
			while ( p && p != this ) try { p = p.parentNode; } catch(e) { p = this; };
			// If we actually just moused on to a sub-element, ignore it
			if ( p == this ) return true; // this was previously FALSE
			// Execute the right function
			return (e.type == "mouseover" ? f : g).apply(this, [e]);
		}
		// Bind the function to the two event listeners
		return this.mouseover(handleHover).mouseout(handleHover);
	}
});