function printad(url, banner, width, height, alt, txt){
  document.write('<center>');
  document.write('<a href=\"' + url + '\" target=\"_top\">');
  document.write('<img src=\"' + banner + '\" width=')
  document.write(width + ' height=' + height + ' ');
  document.write('alt=\"' + alt + '\" border=0><br>');
  document.write('<small>' + txt + '</small></a>');
  document.write('</center>');
}

var how_many_ads = 18;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
txt="Flower Figures #3";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/flowerfrogs2.jpg";
width="200";
height="170";
printad(url, banner, width, height, alt, txt);
}
if (ad==2) {
txt="Art Deco Shapes";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/artdecoshapes.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==3) {
txt="Danse Moderne";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/dansemoderne.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==4) {
txt="Figural Statuary";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/statuary.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==5) {
txt="Etruscan Console Set";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/etruscanset.jpg";
width="200";
height="165";
printad(url, banner, width, height, alt, txt);
}
if (ad==6) {
txt="Swan Console Set";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/swanconsoleset.jpg";
width="200";
height="180";
printad(url, banner, width, height, alt, txt);
}
if (ad==7) {
txt="Flower Figures #2";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/moreflowerfrogs.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==8) {
txt="Bookends #1";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/bookends.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==9) {
txt="Flower Figures #1";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/flowerfrogs.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==10) {
txt="Adam and Eve";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/adamandeve.jpg";
width="200";
height="170";
printad(url, banner, width, height, alt, txt);
}
if (ad==11) {
txt="Lamp Designs";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/lampbases.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==12) {
txt="Dawn Console Set";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/dawnconsoleset.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==13) {
txt="Candlesticks";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/candlesticks2.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==14) {
txt="Bridge Party Favors";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/bridgefavors2.jpg";
width="200";
height="170";
printad(url, banner, width, height, alt, txt);
}
if (ad==15) {
txt="Vases #1";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/vases2.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==16) {
txt="Jazz Bowl";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/jazzb1.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==17) {
txt="Vases #2";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/morevases2.jpg";
width="200";
height="200";
printad(url, banner, width, height, alt, txt);
}
if (ad==18) {
txt="Bookends #2";
url="default.htm";
alt="Cowan Pottery Slideshow";
banner="pics/bookends2.jpg";
width="200";
height="170";
printad(url, banner, width, height, alt, txt);
}