function randomImg1()
{
	theURL = new Array();
	ImageCount = 18;		//　画像の最大枚数
	num = Math.floor(Math.random() * ImageCount);
	document.write("<IMG SRC='./image/top1/"+num+".jpg' WIDTH='100' HEIGHT='75'>");
}

function randomImg2()
{
	theURL = new Array();
	ImageCount = 18;		//　画像の最大枚数
	num = Math.floor(Math.random() * ImageCount);
	document.write("<IMG SRC='./image/top2/"+num+".jpg' WIDTH='100' HEIGHT='75'>");
}

function subWin1(){
window.open("./topics/index.htm","window1","scrollbars=1,resizable=1,width=530,height=600")
}