Remove prototype pollution, call on ready

js/id_highlighter.js

@@ -1,14 +1,16 @@
-Array.prototype.remove = function(v) { this.splice(this.indexOf(v) == -1 ? this.length : this.indexOf(v), 1); }
+if (active_page == 'thread' || active_page == 'index') {
+	$(document).ready(function(){
+		function arrayRemove(a, v) { a.splice(a.indexOf(v) == -1 ? a.length : a.indexOf(v), 1); }
 
-var idshighlighted = [];
+		var idshighlighted = [];
 
-function getPostsById(id){
+		function getPostsById(id){
 			return $(".poster_id").filter(function(i){
 				return $(this).text() == id;
 			});
-}
+		}
 
-function getMasterPosts(parents){
+		function getMasterPosts(parents){
 			if(!parents.hasClass("post")) return;
 			
 			var toRet = [];
@@ -19,13 +21,13 @@ function getMasterPosts(parents){
 			});
 			
 			return toRet;
-}
+		}
 
-$(".poster_id").click(function(){
+		$(".poster_id").click(function(){
 			var id = $(this).text();
 			
 			if($.inArray(id, idshighlighted) !== -1){
-		idshighlighted.remove(id);
+				arrayRemove(idshighlighted, id);
 				
 				$(getMasterPosts(getPostsById(id).parents())).each(function(i){
 					$(this).removeClass("highlighted");
@@ -37,4 +39,6 @@ $(".poster_id").click(function(){
 					$(this).addClass("highlighted");
 				});
 			}
-});
+		});
+	});
+}