i want a anchor should act like and input type submit button. i am using a jquery plugin library that actually uses input type submit but i have styled my buttons on anchors
Since you're using jQuery, just use $() to select the form element, and call submit on it; hook all this up to the anchor via $() to find the anchor and click to hook up the handler:
$("selector_for_the_anchor").click(function() {
$("selector_for_the_form").submit();
return false;
});
Probably best to return false; to cancel the click on the anchor.
Off-topic: But note that this makes your page completely unusable without JavaScript, as well as making it confusing even for JavaScript-enabled browsers employed by users requiring assistive technologies (screenreaders, etc.). It makes the markup completely un-semantic. But since you'd said quite clearly that this was what you wanted to do...