How can we submit the form without pressing Submit?

function checkSubmit(e)
{
   if(e && e.keyCode == 13)
   {
      document.forms[0].submit();
   }
}

Then add the event to whatever scope you need eg on the div tag

<div onKeyPress="return checkSubmit(event)"/>

http://stackoverflow.com/questions/29943/how-to-submit-a-form-when-the-return-key-is-pressed