function check(str){
		var url_set="checkAccount.php?name="+str;
		search_key(url_set,Reset_status);
	}
function Reset_status(){
		if (http_request.readyState==4){
			if (http_request.status==200){
						var xmlDoc=http_request.responsetext;
						if(xmlDoc==1){
							document.getElementById("isExit").innerHTML="此帐号已经存在";
							document.getElementById("backname").value="1";
						}else{
							if(xmlDoc!=0){
								document.getElementById("isExit").innerHTML="恭喜你，"+xmlDoc+"可以注册";
								document.getElementById("backname").value="0";
							}else{
								document.getElementById("isExit").innerHTML="请填写用户名";
							}
						}

			}else{
 						isExit.innerHTML="未知错误";
			}
	}
}
function checkcard(str){
		var url_set="checkCard.php?card="+str;
		search_key(url_set,Reset_card);
}
function Reset_card(){
		if (http_request.readyState==4){
			if (http_request.status==200){
						var xmlDoc=http_request.responsetext;
						if(xmlDoc==1){
							document.getElementById("isExitc").innerHTML="无效卡号";
							document.getElementById("isExitcard").value="0";
						}else{
							if(xmlDoc!=0){
								document.getElementById("isExitc").innerHTML="有效卡号："+xmlDoc+"";
								document.getElementById("isExitcard").value="1";
							}else{
								document.getElementById("isExitc").innerHTML="";
							}
						}

			}else{
 						isExit.innerHTML="未知错误";
			}
	}
}