jquery - Check if elements has\belongs to the same parent -

i have question. example have html:

<div id="imagediv> <a id="testa">     <img alt="" src "" id="img1">     <img alt="" src "" id="img2">     <img alt="" src "" id="img3">     <img alt="" src "" id="img4">     <img alt="" src "" id="img5"> </a>     <img alt="" src "" id="img6"> </div> 

how can check, lowest level and, if possible ,with simple jquery selector or extension, images id`s 1 5 has same parent, not image 6th id.

in words: how check if images id`s 1 5 siblings()?

thanks lot

see http://jsfiddle.net/t324lwoy/1/

function aresiblings(e1, e2){     return $(e1).parent().children().is($(e2)); };  console.log(aresiblings("#img1", "#img3")); console.log(aresiblings("#img2", "#img5")); console.log(aresiblings("#img1", "#img6")); 

update:

or

function aresiblings(e1, e2){     return $(e1).siblings().is($(e2)); };