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function selectchg(obj){ //¼¿·ºÆ®¹Ú½º ¼±Åýà ºÒ·ÁÁú ÇÔ¼ö
var frm = document.frm;
if(obj.value=="fish"){ //¹°°í±â ¼±ÅýÃ
  frm.select2.options.length =0; //±âÁ¸ ¿É¼ÇÀº ¸ðµÎ »èÁ¦
  frm.select2.options[0]= new Option("¼±ÅÃÇϼ¼¿ä",""); //ù¹øÂ° ¿É¼Ç »ý¼º

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  frm.select2.options[2]= new Option("¹è","2");
}else{  
  frm.select2.options.length =0;
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}
}

-->
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