LZLoadCallback

Leeze.js runs its initialization code on the window.onload event. Hooking to onload causes developers to lose access to that event, which can be useful.
LZLoadCallback gives you that functionality back, allowing you to run code in the onload event after Leeze.js initializes.

function LZLoadCallback() {
    console.log("Hello world, after Leeze.js initialization.");
}

That's all the code you need to use this feature. Just define a function called LZLoadCallback before including Leeze.js and it will get called automatically.