jQuery Plugins triggerable by Console, but not by function - why that?
===

I have a mysterious JS Problem: I activate different jQuery-Plugins with one function. It's called like this:

 	<script>
	postAjaxCalls();
	</script>

Then, the corresponding function looks like this:

    function postAjaxCalls() {
    jQuery("[title]").tooltip(); 
    alert("this works great, tooltip not!");
    jQuery("select").selectbox();
    } 

When I reload the page, everything works but the tooltip plugin. Now, if I fire the exact same Code into the JS Console, the plugin is activated:

    jQuery("[title]").tooltip(); 

Why that? Why does it work when activated via console, but doesn't work when activated via a function?

Cheers!