var adAreaStr = "<a href=\"javascript:jump('f1.html');\"><img src=\"img/pr/googleAdSence.gif\" alt=\"\" name=\"googleAdSence\" width=\"160\" border=\"0\" id=\"googleAdSence\" /></a>";

if ( document.getElementById('adArea') ){
	document.getElementById('adArea').innerHTML = adAreaStr;
}

var adAreaCenterStr = "<a href=\"javascript:jump('f1.html');\"><img src=\"/img/pr/adSample300_250.gif\" width=\"300\" height=\"250\" border=\"0\" /></a>";

if ( document.getElementById('adAreaCenter') ){
	document.getElementById('adAreaCenter').innerHTML = adAreaCenterStr;
}