jquery Checking to see if element has element

Question

I'm using jquery 1.3 and is trying to duplicate the 1.4 .has functionality.

I need to check if the .page element contains the image, and if it doesn't, append it.

Is it something like:

var imageid = thirdimage;

if ($('#page:has(#'+imageid+')') === undefined) {
   $('#page').append($('#'+imageid));
}

Thanks.

Answer 1

if( $('#page').find('#'+imageid).length )
  // I has the image! :P

Answer 2

$('#page').find('#'+imageid).length == 0