function changeimg(){
	img = new Array();
	img[0] = "<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' width='100%' height='299' align='middle'><param name='movie' value='img/top_visual_aka.swf' /><param name='quality' value='high' /><param name='play' value='true' /><param name='scale' value='noscale' /><param name='menu' value='true' /><param name='salign' value='lt' /><!--[if !IE]>--><object type='application/x-shockwave-flash' data='img/top_visual_aka.swf' width='100%' height='299'><param name='movie' value='img/top_visual_aka.swf' /><param name='quality' value='high' /><param name='play' value='true' /><param name='scale' value='noscale' /><param name='menu' value='true' /><param name='salign' value='lt' /></object><!--<![endif]--></object>";
	img[1] = "<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' width='100%' height='299' align='middle'><param name='movie' value='img/top_visual_ashi.swf' /><param name='quality' value='high' /><param name='play' value='true' /><param name='scale' value='noscale' /><param name='menu' value='true' /><param name='salign' value='lt' /><!--[if !IE]>--><object type='application/x-shockwave-flash' data='img/top_visual_ashi.swf' width='100%' height='299'><param name='movie' value='img/top_visual_ashi.swf' /><param name='quality' value='high' /><param name='play' value='true' /><param name='scale' value='noscale' /><param name='menu' value='true' /><param name='salign' value='lt' /></object><!--<![endif]--></object>";
	n = Math.floor(Math.random()*img.length);
	document.write(img[n]);	
}