KASXencode

function KASXencode(x){
	var ar_1 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, '-', '.', '\'', '"', '\\', '/', ' ', '(', ')', '$', '%', '*', '@', '&', '^', '?', '!'], ar_2 = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'], len = x.length, split = x.split(''), returnval = '', i, g, num;
	for(i = 0; i < split.length; i++){
		for(g = 0; g < ar_1.length;g++){
			if(ar_1[g]===split[i]){
				if((i%2)===1){
					num = (len+g)%26;
					returnval += ar_2[num];
				}
				else{
					num = (Math.abs(g-len))%26;
					returnval += ar_2[num];
				}
			}
		}
		for(g = 0; g < ar_2.length;g++){
			if(ar_2[g]===split[i]){
				if((i%2)===1){
					num = (len+g)%26;
					returnval += ar_1[num];
				}
				else{
					num = (Math.abs(g-len))%26;
					returnval += ar_1[num];
				}
			}
		}
	}
	return returnval;
}