/*===================================
  [関数 chBanner]
  バナーをランダム表示するJavascript
====================================*/

function chBanner(alt,url,img,file)
{
	n = Math.floor(Math.random() * url.length);
	if((url[n] == "") && (file[n] == ""))
		{
		document.write('<p><img src="'+img[n]+'" width="150" height="60" alt="'+alt[n]+'" title="'+alt[n]+'" /></p>');
		}
	else if((file[n] != "")&&(url[n] == ""))
		{
		document.write('<p><a target="_blank" href="'+file[n]+'" onclick="javascript:pageTracker._trackPageview(\'/_ads/top/rand/'+url[n]+'\');"><img src="'+img[n]+'" width="150" height="60" alt="'+alt[n]+'（PDF）" title="'+alt[n]+'（PDF）" /></a></p>');
		}
	else{
		document.write('<p><a target="_blank" href="'+url[n]+'" onclick="javascript:pageTracker._trackPageview(\'/_ads/top/rand/'+url[n]+'\');" target="_blank"><img src="'+img[n]+'" width="150" height="60" alt="'+alt[n]+'（新しい画面で開きます）" title="'+alt[n]+'（新しい画面で開きます）" /></a></p>');
		}
}
// _______________________________________ end of function fsc() ___ 

//EOF