jQuery Solution:
$(document).ready(function(){
$('form[name="form"]').keypress( function(evt){
return !(evt.which==13 && evt.target.type!='textarea');
});
$('form[name="form"] input[type="submit"]').attr('tabIndex',-1); // this prevents submit also by spacebar (keyCode==32)
//$('form[name="form"]').submit(function(){ alert('test'); return false; }); // test
});