function $(id)
{
	var obj = document.getElementById(id);
	if (obj != null)
		return obj;
	return null;
}

function isC_id(){
	var pattern=/^[1-9]\d{8}$/;
	if(pattern.test($("txtUID").value)){
        if($("txtUName").value != ""){
	    $("clientMsg").style.display = "none";
		return true;					
	    }
	    else if(!$("txtMsg")){
		    $("clientMsg").style.display = "block";
		    $("clientMsg").innerHTML = "提示信息：户名不能为空！";
		    return false;
	    }
	    else{
	        $("txtMsg").style.display = "block";
	        $("txtMsg").innerHTML = "提示信息：户名不能为空！";
		    return false;
	    }					
	}
	else if(!$("txtMsg")){
		$("clientMsg").style.display = "block";
		$("clientMsg").innerHTML = "提示信息：请输入正确的用户编号！";
		return false;
	}
	else{
	    $("txtMsg").style.display = "block";
	    $("txtMsg").innerHTML = "提示信息：请输入正确的用户编号！";
		return false;
	}
}

function clearall()
{
    $("clientMsg").style.display = "none";
    if($("txtMsg"))
        $("txtMsg").style.display = "none";
    $("txtUID").value="";
    $("txtUName").value="";
    return false;
}
function chkhyl(obj){
    if(obj.selectedIndex ==0 )
    $("divlsqf").style.display = "block";
    else
    $("divlsqf").style.display = "none";
}