It is an example of a UITableView with a UIWebView in each cell.
A UIWebView's height will be calculated immediately with the HTML-like content.
The main parser function is copied and modified from RTLabel
1.a span with background image style will be considered as an image.
2.a img tag is supposed to be with two attributes "imgwidth" and "imgheight", otherwise the width/height value will be counted as 100px.