JQuery :: .load(callback) Event Is Not Fired On Dynamically Loaded Content?

I'm trying to load dynamically some content and I'd like to fire a function when all the newly added content (including images, iframes and scripts in it) are loaded:

var htmlStr='html string including images, iframes and scripts';
$("#contents").html(htmlStr).load(function(){
alert("all images, scripts and iframes are fully loaded, you can continue");
})

According tohttp:[url]....(at least how I understand it) this should work: Theloadevent is sent to an element when it and all sub-elements have been completely loaded. This event can be sent to any element associated with a URL,images, scripts, frames, iframes, and the windowobject.Unfortunatelly my function is never called. For the meantime I found a workaround:

var html=$('html string including images, iframes and scripts');
var elements=html.find("img,script,iframe,frame");
var loadCounter = elemets.length;[code]....