Strikethrough text can be marked up as follows:

Edit code and click me	Your Result (Some examples do not work in Google Chrome):
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <p>Version 2.0 is <s>not yet available!</s> now available!</p> <p>Version 2.0 is <strike>not yet available!</strike> now available!</p> </body> </html>
Edit the code above and click to see the result	www.xhtml.co.il - Try it yourself