code:
<img src="bla.jpg" alt="blabla" title="blabla" style="float:left;" />
img[title]:after {
content: attr(title);
display: block;
}
Set the width of the img:after to the width of the image.
This only works in Opera, so it's not a good solution. Wrap the text and picture in a floated div, as others have suggested.