bold, header effects in alert()?

Question

in javascript, how to make alert bold n use h1 to h5 headers? Is this possible or simply plain alert is option?

how to include bold and h1 to this alert?

function onlooad()
{
    alert("wssup??");

}

Answer 1

As far as I know, this is impossible.

Answer 2

You can not use HTML in alert(). For that you need to use window.open() or some custom code like this:
http://docs.jquery.com/UI/Dialog

Answer 3

You can use custom elements that act like alert boxes. Check this one out

jQuery Impromptu

Answer 4

Javascript alert is limited in terms of formatting because it does not recognise HTML markup. If this is important, consider an in-page alternative. A quick web search turned up the following:

http://www.jondavis.net/codeprojects/jqalert/