php - checkbox submit on href (html) -

i submit form without submit button when click on href. here code :

page 1 :

<form name="myform" method="post" action="page2.php">      <input type="checkbox" name="condition" value="1"> </form> <a href="page2.php?item=n" onclick="document.forms['myform'].submit();"> link </a> 

page 2 :

 $_session['condition'] = isset($_post['condition'])? 1 : 0; 

the problem $_post['condition'] never set, when box checked.. seems form not submited page1 page2. have clue why happen ?

edit :

maybe wasn't clear trying achieve edited code : using href because have list of ref on user can click wanted add option checkbox. want send option arguments of ref when user clicks on ref.

how this?

<a href="page2.php?item=n" onclick="document.forms['myform'].attributes.action.value = this.attributes.href.value; document.forms['myform'].submit(); return false;"> link </a>