Adding the following to your script injection will enable you to make page specific customizations:
function temp(){
if (!top.noodle) {
setTimeout(temp, 100);
}
if (top.noodle.custom) {
return;
}
top.noodle.custom = function (){
var doc=top.noodle.mainWindow().document;
var url=doc.location.href;
//your code go here
}
}
temp();