var cas = 17;
var ca = new Array(cas);
    
    ca[0] = "http://airtravelcenter.ch/js/bwiz468.js";
    ca[1] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[2] = "http://airtravelcenter.ch/js/auctionair468.js";
    ca[3] = "http://airtravelcenter.ch/js/bb468.js";
    ca[4] = "http://airtravelcenter.ch/js/fb468.js";
    ca[5] = "http://airtravelcenter.ch/js/bwiz468.js";
    ca[6] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[7] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[8] = "http://airtravelcenter.ch/js/ccspielphdoa.js";
    ca[9] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[10] = "http://airtravelcenter.ch/js/i2i468a.js";
    ca[11] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[12] = "http://airtravelcenter.ch/js/adcntrB.js";
    ca[13] = "http://airtravelcenter.ch/js/tl468.js";
    ca[14] = "http://airtravelcenter.ch/js/ccspielphdoa.js";
    ca[15] = "http://airtravelcenter.ch/js/ts468.js";
    ca[16] = "http://airtravelcenter.ch/js/atctbB.js";

    function pRma(range) {
        if (Math.random)
            return Math.round(Math.random() * (range-1));
        else {
            var now = new Date();
            return (now.getTime() / 1000) % range;
        }
    }
    
        var ChcA = pRma(cas);
    document.writeln("<script src=" + ca[ChcA] + ">" + "<" + "/script" + ">");