var c0 = "Classification ⁄ Category Index";
var c1 = "Environmental Information";
var c2 = "Waste Water Treatment";
var c3 = "Water Supply & Purification";
var c4 = "Earth Preservation";
var c5 = "Air Pollution Control";
var c6 = "Waste Management";
var c7 = "Recycling";
var c8 = "Noise Protection";
var c9 = "Power Generation";
var c10 = "Energy Efficiency";