function doSubmit (f, task)
        {
        f.task.value = task;
        return f.submit();
        }

function doCont (f)
        {
        var x = true;
        if (!rb_select(f))
               {
               return false;
               }
         doSubmit(f,"MT_SELECT");
        }


function rb_select (f)
        {
	var mt_select = false;
        for (i = 0; i < f.membership_type.length; i++)
                {
                if ( f.membership_type[i].checked == true) //membership_type is a required value
                        {
                        mt_select = true;
                        }
                }
        if (!mt_select) //membership_type is a required value
                {
                alert("Missing required \"Membership Type\" selection");
                return false;
                }
       	return true;
        }