Javascript - Change element's src in specified element

Question

In html I have a lot od DIVs with names(yes, names, not IDs) respectively p001, p002, p003... which are like this:

<div id="pole" name="p001"><img src=""></div>
<div id="pole" name="p002"><img src=""></div>
<div id="pole" name="p003"><img src=""></div>

etc...

In Javascript I have defined variable called 'pos' which contains a number, for now: "284" and a function which should change img src to "player.png". I tried 2 ways and none of these work:

document.getElementsByName('p'+pos).innerHTML='<img src="player.png">';

and

document.getElementsByName('p'+pos).getElementsByTagName("img").src="player.png";

How to change img src which is in specified DIV?

Solution

getElementsByName returns a list of elements, not a single element, so try:

document.getElementsByName('p'+pos)[0].
    getElementsByTagName("img")[0].src="player.png";