function buy(a){
	if(a==""){
		alert('·Î±×ÀÎÀ» ÇØ ÁֽʽÿÀ.');
		document.login_form2.submit();
	}
	else{
		var cnt = 0;
		for( var i=0; i<document.buy.elements.length; i++) {
			var ele = document.buy.elements[i];

			if((ele.name == 'pkey') || (ele.name == 'g_code') || (ele.name == 'lec_code')){
				if(ele.checked) {
					cnt = cnt + 1;
				}
			}
		}
		if (cnt == 0){
			alert('°­ÀÇ ¶Ç´Â ±³À縦 ½ÅûÇÏ¿© ÁֽʽÿÀ.');
			return;
		}
		document.buy.action="/member/order_pass.asp"
		document.buy.submit();
	}
}