function research(){
		var submitFlag = 0;
			for(i = 0; i < document.research.elements.length; ++i) {
				if(document.research.elements[i].name == 'ballot') {
					if(document.research.elements[i].checked == true) {
						submitFlag = 1;
					break;
					}
				}
			}
		if(submitFlag){
			document.research.submit();
		}
		else{
			alert(" ¼³¹® Ç׸ñÀ» ¼±ÅÃÇÏÁö ¾Ê¾Ò½À´Ï´Ù "); 
		}
}
function chked(){
	if(detail.txt_nickname.value == ""){
		alert("À̸§À» ÀÔ·ÂÇϼ¼¿ä");
		detail.txt_nickname.focus();
		return;
	}	
	if(detail.txt_opinion.value == ""){
		alert("³»¿ëÀ» ÀÔ·ÂÇϼ¼¿ä");
		detail.txt_opinion.focus();
		return;
	}
	
	document.detail.submit();
	
	
}
function research_main(){
	location.replace("research.asp");
}