function changeAction(form1,url) {
    form1.action = url;
}
function popupthis_small(url){
  	popupWin = window.open(url, 'popupthis_small','width=400,height=300,top=250,left=110,scrollbars=yes,status=no,resizable=no')
}
function popup_img(key, file_at){
  	popupWin = window.open('/main/popup_img?key=' + key + '&file_at=' + file_at, 'popupthis_small','width=330,height=240,top=250,left=110,scrollbars=yes,status=no,resizable=yes')
}