img = new Array();
img[0] = "./data_file/topimg/001.jpg";
img[1] = "./data_file/topimg/002.jpg";
img[2] = "./data_file/topimg/003.jpg";
img[3] = "./data_file/topimg/004.jpg";
img[4] = "./data_file/topimg/005.jpg";
img[5] = "./data_file/topimg/006.jpg";

function setBanner(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='" + img[No] + "' border='0'>");
}