function qudeeadsense(){
	var query = "";
	if(typeof(qad_keywords) == 'string' && qad_keywords.constructor==String && qad_keywords.length>0){
		query = qad_keywords;
	}else{
		query = extact();
	}
	var src = 
		"http://www.qudee.net/ads.do?title="+encodeURI(query)+
		"&site="+qad_site +
		"&type="+qad_type +
		"&trace="+qad_trace +
		"&width="+qad_width +
		"&height="+qad_height;
	if(typeof(qad_addr) == 'string' && qad_addr.constructor==String && qad_addr.length>0){
		src = src + "&addr="+encodeURI(qad_addr);
	}
	if(typeof(qad_topic) == 'string' && qad_topic.constructor==String && qad_topic.length>0){
		src = src + "&topic="+encodeURI(qad_topic);
	}else{
		src = src + "&topic=";
	}	
	document.write("<iframe width='"+qad_width+"' height='"+qad_height+"' border='0' align='center' marginwidth='0' marginheight='0' hspace='0' vspace='0' frameborder='0' scrolling='no' src='"+src+"' allowTransparency='true'></iframe>");
}
function getTextNodes(parent){
	var anyString = ""; 
	var preNode = parent.previousSibling;
	if(null == preNode){
		if(parent.nodeType==3 && parent.nodeValue.length > 8){
			anyString = parent.nodeValue;
		}else if(null != parent.parentNode){
			anyString = getTextNodes(parent.parentNode);
		}		
	}else if(preNode.nodeType==3 && preNode.nodeValue.length > 8){
		anyString = preNode.nodeValue;
	}else if(preNode.tagName=="P" || preNode.tagName=="SPAN" || preNode.tagName=="STRONG"){
		anyString = getTextNodes(preNode.childNodes[preNode.childNodes.length-1]);
	}else if(preNode.tagName=="p" || preNode.tagName=="span" || preNode.tagName=="strong"){
		anyString = getTextNodes(preNode.childNodes[preNode.childNodes.length-1]);
	}else if(preNode.tagName=="H1" || preNode.tagName=="h1"){
		anyString = getTextNodes(preNode.childNodes[preNode.childNodes.length-1]);
	}else if(preNode.tagName=="H2" || preNode.tagName=="h2"){
		anyString = getTextNodes(preNode.childNodes[preNode.childNodes.length-1]);
	}else if(preNode.tagName=="H3" || preNode.tagName=="h3"){
		anyString = getTextNodes(preNode.childNodes[preNode.childNodes.length-1]);
	}else if(preNode.tagName!="BODY" || preNode.tagName!="body"){
		anyString = getTextNodes(preNode);
	}
	return anyString;
}
function extact(){
	var query = "";//父级查找最后的文本	
	var ifrms = document.getElementsByTagName("script");
	var ifrm = ifrms[ifrms.length-1];
	if(null != ifrm.parentNode){
 		query = getTextNodes(ifrm.parentNode);
	}
	return query + " " + document.title;
}
qudeeadsense();