function CheckNO( String )
{ 
    var Letters = "0123456789-";
     var i;
     var c;
      if(String.charAt( 0 )=='-')
	return false;
      if( String.charAt( String.length - 1 ) == '-' )
          return false;
     for( i = 0; i < String.length; i ++ )
     {
          c = String.charAt( i );
	  if (Letters.indexOf( c ) < 0)
	     return false;
     }
     return true;
}
function check_NO()  
{  
	if ( formzd.bianhao.value==""){
		alert ("提示：\n\n输入要查询的信息编号！");
		formzd.bianhao.focus();
		return false;
	}        if (!CheckNO(formzd.bianhao.value ) || formzd.bianhao.value.length > 99999 || formzd.bianhao.value.length < 1) {
		alert("提示：\n\n1.您的输入可能不是数字！请输入数字；\n\n2.请确认您的输入状态为半角。");
		formzd.bianhao.focus();
		return false;
	}
        document.formzd.submit.disabled=true;
}