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

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