var df = new MyWindow(500, 50, 'delete_friends', 'deleteFriends', 'df');

function openDeleteFriends()
{
    if(df.window != 'null') {
        df.close();
    }
    df.aj_parameters = $('deleteFriends').serialize();
    df.reload = true;
    df.open();
}
function deleteFriends()
{
	df.close();

	// timeout for IE6
	setTimeout(function () {
		$('deleteFriends').submit();
	}, 1000);
}