var maxAdNo = 3
var adNo
var myAdA = new Array()
myAdA[0] = '<img src="images/topimg_spring.gif" width="760" height="250" border="0">'
myAdA[1] = '<img src="images/topimg_summer.gif" width="760" height="250" border="0">'
myAdA[2] = '<img src="images/topimg_autumn.gif" width="760" height="250" border="0">'
myAdA[3] = '<img src="images/topimg_winter.gif" width="760" height="250" border="0">'