JQuery :: Getting Image By Source With Special Characters?

I'm trying to get some images on my page by their src attribute. Src attribute have this format :

src = [URL]

For doing that I'm using the following query :

$j("img[src*='request=gettile'][src*='"+$j(this).data("target")+"']")
$j(this).data("target") contains my mapname, it works fine.

But my users can use mapname that can be contained in another map names. Example : mapblabla and pbla. When I'm searching pbla it's returning images of mapblabla and pbla. That's why I need to put the symbol equal before and the symbol & after my map name. Then the request is :

$j("img[src*='request=gettile'][src*='\="+$j(this).data("target")+"\&']")