topihref=new Array();
	timgsrc=new Array();
	timgalt=new Array();
	// トピックス画像設定 用意する画像は width="608" height="231"
	// ↓ここから下を変更
	timgsrc[0]='images/main.jpg';timgalt[0]='Original inventor of the CCD Board Camera worldwide';topihref[0]='products/board.html';
	timgsrc[1]='images/main1.jpg';timgalt[1]='Original inventor of the CCD Board Camera worldwide';topihref[1]='products/dome.html';
	timgsrc[2]='images/main2.jpg';timgalt[2]='Original inventor of the CCD Board Camera worldwide';topihref[2]='products/video.html';
	timgsrc[3]='images/main3.jpg';timgalt[3]='Original inventor of the CCD Board Camera worldwide';topihref[3]='products/housed.html';


	t_arylen=timgsrc.length;

function topiwrite(){

	topi_set=new Array();
	for(i=0;i<t_arylen;i++){
		topi_set[i]='<a href="'+topihref[i]+'"><img src="'+timgsrc[i]+'" alt="'+timgalt[i]+'" width="608" height="231" border="0"></a>';
	}

	_topi_num=Math.floor((Math.random()*t_arylen));
	 document.write(topi_set[_topi_num]);

}