img = new Array();
img[0] = "01.jpg";
img[1] = "02.jpg";
img[2] = "03.jpg";
img[3] = "04.jpg";
img[4] = "05.jpg";
img[5] = "06.jpg";

function setImage1(){
	amount = img.length;
	No = Math.floor(Math.random()*amount);
	document.write("<img src='./img/top/top_main_" + img[No] + "' width='888' height='288' border='0'>");
}