email links in mail

[ganesh22]

Hi,
NavigateUrl='<% # Eval("EmailId", "mailto:{0}?Sub ject=Urgent!!&B ody=Dear Candidate,%0Dpl s visit www.yahoo.com%0 D*Pls forward your details to xyz@yahoo.com") %>'

in the above code iam not getting links www.yahoo.com & xyz@yahoo.com in mail. how to get links for that