在动态JS页面上加上以下代码即可

function remember_data()

{

  var obj=document.getElementById('client_code');

  var client_code=document.getElementById('old_client_code').value;

  var client_name=document.getElementById('old_client_name').value;

  var len=obj.options.length;

  for (i=0;i＜=len-1;i++){

  if(obj.options[i].value==client_code && client_code !=null &&  client_code !="" ){

  obj.options[i].selected = true;

  }

  

  }

if( client_code !=null &&  client_code !="" ){

  var changeclient='slc_deliver_goods_pre_order_add.asp?client_code='+client_code;

   document.getElementById('hidden_iframe').src=changeclient;

   document.form1.client_name.value=client_name;

   delpro_all();

}

}

window.onload = function () { remember_data(); }