Script has a glitch

I had a script written for me a while ago, and I decided to use it in a community that has a lot of groups. The script is supposed to change the color of background of the poster, according to the user's group. It works flawlessly, but I noticed it doesn't work on multiple pages. Just the first page. When you select a different page after the first page, you'll see the default background image. Here's a link to my website that you'll see the issue. Working Fine Example Glitch Example

Here's the code

Code:

window.bkg={};
bkg.copyright="Code by Wolfuryo. Use at your own risk. You can modify it, but this notice must remain here. Use my code without this notice and you'll be destroyed :D";
bkg.opacity="0.9";
bkg.init=function(){
if(!/t\d+\-/.test(location.pathname)) return;
bkg.len=$(".postprofile>dl>dt>strong>a>span[style]").length;
bkg.db();
};
bkg.db=function(){
var i=0;
for(i;i<bkg.len;i++){  $(".postprofile>dl>dt>strong>a>span[style]").eq(i).parent().parent().parent().parent().parent().parent().css({
"background":$(".postprofile>dl>dt>strong>a>span[style]").eq(i).css("color"),
"opacity":bkg.opacity
});
};
};
$(function(){
bkg.init();
})

Hy, try this code, i tested on your forum and is fine to work.

Code: var bkg = window.bkg || {}; bkg.copyright = "Code by Wolfuryo. Use at your own risk. You can modify it, but this notice must remain here. Use my code without this notice and you'll be destroyed :D"; bkg.opacity = "0.9"; bkg.init = function() {     if(/\/t(\d+)-(.*?)|\/t(\d+)p(\d*)-(.*?)/.exec(location.href)) {         if(_userdata.session_logged_in == 1) {             bkg.len = $(".postprofile > dl > dt > strong > a > span[style]").length;         } else {             bkg.len = $(".postprofile > dl > dt > strong > span[style] > strong").length;         }                 bkg.db(bkg.len);         console.log(bkg.len);     } }; bkg.db = function(bkgLen) {     for(let i = 0; i < bkgLen; i++) {         if(_userdata.session_logged_in == 1) {             $(".postprofile > dl > dt > strong > a > span[style]").eq(i).parent().parent().parent().parent().parent().parent().css({                 "background":$(".postprofile>dl>dt>strong>a>span[style]").eq(i).css("color"),                 "opacity" : bkg.opacity             });             console.log('Len: ' + i);             console.log('Post: ' + $(".postprofile > dl > dt > strong > a > span[style]").eq(i).parent().parent().parent().parent().parent().parent().attr('id'));         } else {             $(".postprofile > dl > dt > strong > span[style]").eq(i).parent().parent().parent().parent().parent().parent().css({                 "background":$(".postprofile>dl>dt>strong>span[style]").eq(i).css("color"),                 "opacity" : bkg.opacity             });             console.log('Len: ' + i);             console.log('Post: ' + $(".postprofile > dl > dt > strong > span[style]").eq(i).parent().parent().parent().parent().parent().parent().attr('id'));         }     }; }; $(function(){     bkg.init(); });