function get_random(maxNum)
{
var ran=Math.round(Math.random()*maxNum);
return ran;
}
function getImage()
{
var img=new Array(10)
img[0]="top_01";
img[1]="top_02";
img[2]="top_03";
img[3]="top_04";
img[4]="top_05";
img[5]="top_06";
img[6]="top_07";
img[7]="top_08";
img[8]="top_09";
img[9]="top_10";
var pick=get_random(10);
if (img[pick]!=undefined){
document.write('
');
} else {
document.write('
');
}
}