onBlur event not working

I've used the following code

<input type="text" name="email"

onblur="validateEmail(this.value,1,0);" />

Function ValidateEmail is in a.js file and I've included in my jsp. But this onblur event is not working. Even if u replace with any other Javascript code, nothing is shown(For ex alert). What cud be the reason?

[349 byte] By [harinibiligiria] at [2007-11-26 17:54:42]