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<script Language="Javascript">
function extChk(){
var f = document.tagin_netform;
var st = f.tagin_net_file.value.lastIndexOf(".")-(-1);
var nd = f.tagin_net_file.value.length;
var ext = f.tagin_net_file.value.substring(st,nd);
if(ext == 'jpg' || ext == 'gif') {
} else {
alert("ÆÄÀϸí : " + f.tagin_net_file.value + "\n\n¾÷·ÎµåÇÒ ÆÄÀÏÀº GIF,JPG¸¸ °¡´ÉÇÕ´Ï´Ù")
}
}
</script>
<form name="tagin_netform">
<input type="file" name="tagin_net_file" onChange="extChk()" size="35" class="tagin_net_input">
</form>
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