function hid_display_table(t_id,isShow){
if ( isShow ) {
t_id.style.display="";
}else{
 t_id.style.display="none";
 }
} 
function selectDownloadType(type){
  if( type==1 ){
    hid_display_table(table1,true);
    hid_display_table(table2,false);
  }else if( type==2 ){
    hid_display_table(table1,false);
    hid_display_table(table2,true);
  }
}
function click_download_link(url){
  window.location.href=url;
}