function domainBtn_onClick(domainId, userId)
{
	var url = "../apps/sale/domainLevelUpdate.action";
		
	var params = Object.toQueryString({
					requestType : "up",
					domainId : domainId
				 });
	var req = new Ajax.Request(url,
	  {
	    method: 'post',
	    parameters : params,
	    asynchronous: true,
	    onComplete: function (response){
	    	var status = response.status;
			var responseXML = response.responseXML; 
			
			if (!(status == 200 && responseXML))
			{
				alert('连接失败.');
			}  
			
			var temp = responseXML.getElementsByTagName("success");
			var success = temp[0].text;
			if (success == "true")
			{
				changeTab('tab8',userId);
			}else
			{
				temp = responseXML.getElementsByTagName("error");
				var errorText = temp[0].text;
				alert(errorText);
				refreshValidateImg();
			}
	       }
	      });
}