   AJAX login won't process ENTER same as clicking Submit
  http://www.roseindia.net/ajax/ajaxlogin/ajax-login-program.shtmlHere is the example. And here you can test it out:http://www.roseindia.net/ajax/ajaxlogin/ajaxlogin-example.htmlNotice how when you enter admin / admin  and click the Login button, it processes the information correctly, but when you press enter while the focus is still in the Password field it doesn't. This is strange since as you can see in the first link, he put an onsubmit attribute in the form tag presumably to handle this type of situation.How do I fix this?   
  change:<input type="button" name="a1"  value="Login" onclick="call_login()">to <input type="submit" name="a1"  value="Login" onclick="call_login()">;  Are you using ASP.net by any chance.  if so, i am assuming this is in Internet Explorer then.If this is your case, have a read at this article.http://www.4guysfromrolla.com/articles/060805-1.aspxIt's a bug in the IE system, firefox handles it properly.  I have run into this a few times, and now i feel like i need to spread the word lol.If this is not your case, sorry.   