var numLinks = 41;
var links = new Array(numLinks);
links[0] = "trip1.htm";
links[1] = "trip2.htm";
links[2] = "trip3.htm";
links[3] = "trip4.htm";
links[4] = "trip5.htm";
links[5] = "trip6.htm";
links[6] = "trip7.htm";
links[7] = "trip8.htm";
links[8] = "trip9.htm";
links[9] = "trip10.htm";
links[10] = "trip11.htm";
links[11] = "trip12.htm";
links[12] = "trip13.htm";
links[13] = "trip14.htm";
links[14] = "trip15.htm";
links[15] = "trip16.htm";
links[16] = "trip17.htm";
links[17] = "trip18.htm";
links[18] = "trip19.htm";
links[19] = "trip20.htm";
links[20] = "trip21.htm";
links[21] = "trip22.htm";
links[22] = "trip23.htm";
links[23] = "trip24.htm";
links[24] = "trip25.htm";
links[25] = "trip26.htm";
links[26] = "trip27.htm";
links[27] = "trip28.htm";
links[28] = "trip29.htm";
links[29] = "trip30.htm";
links[30] = "trip31.htm";
links[31] = "trip32.htm";
links[32] = "trip33.htm";
links[33] = "trip34.htm";
links[34] = "trip35.htm";
links[35] = "trip36.htm";
links[36] = "trip37.htm";
links[37] = "trip38.htm";
links[38] = "trip39.htm";
links[39] = "trip40.htm";
links[40] = "trip41.htm";
window.onload=function(){
    if(typeof(document.getElementById)!="undefined"){
        document.getElementById("rndLink").setAttribute("href",links[Math.floor(Math.random()*numLinks)]);
    }
}