var ua = navigator.userAgent;
var isMacBr = ua.match(/Mac/i);
if(isMacBr){
	document.write('<script type="text/javascript" charset="Shift_JIS" src="/common/js/drop_down_int_jis.js"></script>');
}else if(document.charset=='shift_jis' || document.characterSet==="Shift_JIS"){ // 左がIE用、右がFF用
	document.write('<script type="text/javascript" charset="Shift_JIS" src="/common/js/drop_down_int_jis.js"></script>');
}else{ // IE以外
	document.write('<script type="text/javascript" src="/common/js/drop_down_int_euc.js"></script>');
}