Updating a picture without page reload

Question

How would I go about updating an image that gets updated on a server every couple of seconds with out the user having to hit the refresh button, my first guess was ajax but

Answer 1

Adding a time span to the end of the image URL worked for me.

var imagePath = "http://localhost/dynamicimage.ashx";

$("#imgImage").attr("img", imagePath + &ts" + (new Date()),toString() );