function random(N)
{
return Math.floor(Math.random()*N)
}
function advert()
{
i = random(28);
switch(i)
{
case 0: document.write("
"); break;
case 1: document.write("
"); break;
case 2: document.write("
"); break;
case 3: document.write("
"); break;
case 4: document.write("
"); break;
case 5: document.write("
"); break;
case 6: document.write("
"); break;
case 7: document.write("
"); break;
case 8: document.write("
"); break;
case 9: document.write("
"); break;
case 10: document.write("
"); break;
case 11: document.write("
"); break;
case 12: document.write("
"); break;
case 13: document.write("
"); break;
case 14: document.write("
"); break;
case 15: document.write("
"); break;
case 16: document.write("
"); break;
case 17: document.write("
"); break;
case 18: document.write("
"); break;
case 19: document.write("
"); break;
case 20: document.write("
"); break;
case 21: document.write("
"); break;
case 22: document.write("
"); break;
case 23: document.write("
"); break;
case 24: document.write("
"); break;
case 25: document.write("
"); break;
case 26: document.write("
"); break;
case 27: document.write("
"); break;
}
}