AS2 Luminosity / Grayscale Utility

This is a purely code based implementation of the ubiquitous gray scale/luminosity filter. While most common implementations of this effect tend to be timeline based and therefore lacking in flexibility this little gem of code-driven ingenuity is free from such constraints and open to wider application. Better yet, this utility was built with ease of use in mind. Near effortless two-step setup process involves simply copying the script to a folder and referencing the script via an "#include" statement on the main timeline. Once that's done every movieclip will support the fabulous "_grayScale" property. "Property?" you ask. That is precisely the beauty of this utility. After the initial setup, the effect is accessible via the "_grayScale" property on ANY movieclip instance.