Nested quotes level 4 javascript error - php

Question

I have the following code (I formated it to more lines, but in my source code I have it in one line, because innerHTML doesn't like new lines somehow - but that isn't the problem...):
<?php
echo "
<img
src='1.png'
onclick='
document.getElementById(\"my_div\").innerHTML=\"
<img src=\\\"1.png\\\" onclick=\\\"alert(\\\\\\\"text\\\\\\\");\\\" />
\";
'
/>
";
?>
And somewhere in the body I have :
<div id="my_div"></div>
So, when I click on the image, i'll have the same image inside my_div. The problem is, that when I click on the 2nd image, javascript doesn't alert anything.
But when I change this:
alert(\\\\\\\"text\\\\\\\");
to this:
alert(MyText);
and add JavaScript variable MyText:
<script>
MyText = "text";
</script>
it now works.
I think the problem is with those nested quotes:
\\\\\\\"
(level 4). Any ideas? Thanks.
EDIT: please don't post here another methods of doing this, I'd like to know why those quotes doesn't work here..
SECOND EDIT: I need that php there, because this is only a piece of my code (in full code I need it to display images in cycle...)

Answer 1

If you want a quote character as data (instead of as an attribute delimiter) in HTML, you represent it as " not \"

Answer 2

There's nothing "dynamic" in your script - you're not inserting PHP variables, so why build that all from within a PHP echo? Simply have:
Or if you want to make it even cleaner:
<script type="text/javascript">
function addImg() {
document.getElementById('my_div').innerHTML='<img src="1.png" onclick="alert(\'text\')" />';
}
</script>
<img src="1.png" onclick="addImg()" />

Answer 3

refactor your JS into an external file (with a function that will do the onclick logic), and try outputting something simpler with php's echo

Answer 4

Use jQuery!
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<div id="my_div"></div>
<img src="1.png" class="my_img" />
<img src="2.png" class="my_img" />
<img src="3.png" class="my_img" />
<script type="text/javascript">
jQuery(function() {
$('.my_img').click(function() {
$('#my_div').html($(this).clone().unbind());
alert('text');
});
});
</script>