PHP – random div names?

I have a piece of php I’m using on wordpress blog posts. It is a simple fade in/ fade out, but it works by knowing the div’s exact class.

<script type="text/javascript">
jQuery(function(){
jQuery('.story-wrap').mouseenter(
function(){
jQuery('.dates .a').fadeOut(300, function(){
jQuery('.dates .share').fadeIn(300);
});
}
);
jQuery('.story-wrap').mouseleave(
function(){
jQuery('.dates .share').fadeOut(300, function(){
jQuery('.dates .a').fadeIn(300);
});
}
);
});
</script>

It works great but when I use it on an archive page and there is more than one instance of the div class, they all react at the same time. I want each div to react separately, eg you hover div one and only div one reacts not every div.

Is there some way I can create a random div name each time dynamicaly and have the script work with that somehow??

Thanks so much for any help!