you can try this solution
$( "#riverroad" ).tooltip({
content: '<img src="https://kohler.scene7.com/is/image/PAWEB/Category_Template?$PDPcon$&$gradient_src=PAWEB%2Forganic-gradient&$shadow_src=PAWEB%2FBlank&$Badge1_src=PAWEB%2FBlank&$Badge4_src=PAWEB%2FBlank&$Badge3_src=PAWEB%2FBlank&$Badge2_src=PAWEB%2FBlank&$product_src=is{PAWEB%2Fzaa86577_rgb}" width="150" height="150"/><p><a href="http://www.google.com">content</a></p>',
show: { duration: 500,delay: 1000 } ,
open: function(event, ui)
{
if (typeof(event.originalEvent) === 'undefined')
return false;
$('div.ui-tooltip').not('#' + $(ui.tooltip).attr('id')).remove();
},
close: function(event, ui)
{
ui.tooltip.hover(function()
{
$(this).stop(true).fadeTo(400, 1);
},
function()
{
$(this).fadeOut('400', function() { $(this).remove(); });
});
}
});