Abilitate Login button on my html code for homepage

[fre]

Hi I have taken from the web this html code that I insert in my page http://miwasrl.com/new/index.php   in the right column with a widget for having clients enter and register.

But I don't know hot to have the button "Accedi" or "Login" works. Can someone please help me? Precisely I don't know whic kind of link do I have to put. (I will put an underline where is the link to modyfy I think)

The code is:

<div class="block"><form action="http://miwasrl.com/new/index.php/login" method="post" id="login_form" class="box">
<h3 class="page-subheading"><span style="font-size: 12pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-size: 12pt; font-family: georgia, palatino;">ACCEDI</span></h3>
<div class="form_content clearfix">
<div class="form-group">E-MAIL &nbsp; &nbsp; &nbsp;&nbsp; <input class="is_required validate account_input form-control" id="email" name="email" value="" type="text" /></div>
<div class="form-group">PASSWORD <input class="is_required validate account_input form-control" id="passwd" name="passwd" value="" type="password" /></div>
<p class="lost_password form-group"><a href="http://miwasrl.com/new/index.php?controller=password">Hai dimenticato la tua password?</a></p>
<p class="lost_password form-group"><a href="http://miwasrl.com/new/index.php?controller=authentication&create_account=1">Non hai ancora un account? Creane ora qui uno</a></p>
<p class="submit"><input class="hidden" name="back" value="my-account" type="hidden" /><button type="submit" id="SubmitLogin" name="SubmitLogin" class="button btn btn-default button-medium"><span><i class="icon-lock left"></i> ACCEDI </span></button></p>
</div>
</form></div>
 

Thank you very much