function checkit(str){
	if( document.forms['search'].C1.checked ||
		document.forms['search'].C2.checked ||
		document.forms['search'].C5.checked		 ){
		return true;
	}else{
		if( str ){
			alert( str );
		}else{
			alert( 'カテゴリを少なくとも一つ選択してください。');
		}
		return false;
	}
}

function tocgi2(s){
	var c = "";
	if (document.layers){
		s = escape(s);
	}
	if( document.forms['search'].C1.checked ){
		c = c + '&C1=on';
	}
	if( document.forms['search'].C2.checked ){
		c = c + '&C2=on';
	}
//	if( document.forms['search'].C3.checked ){
//		c = c + '&C3=on';
//	}
//	if( document.forms['search'].C4.checked ){
//		c = c + '&C4=on';
//	}
	if( document.forms['search'].C5.checked ){
		c = c + '&C5=on';
	}
	location.href='s_result.php?area='+s +c;
}

function tocgi(map){

	if( checkit()){
		tocgi2(map);
	}
}