//============================================================================
//　関数名　: 　fncChange
//　関数内容：　SelectBoxが変更（onChange）された時に呼び出される。
//							
//　引数　　：　
//　戻り値　：　なし
//============================================================================
function fncChange(objSB){

	var id = objSB.value;
	var line = objSB.name;

//	var tmp = line.charAt(line.length-1);
	var strName = "room_station";

	var objSelect = document.getElementsByTagName('select');

	objRegex = new RegExp(strName);
	var strTmp;
	var elem;
//	window.alert(id);
	
	
	for(i=0; i < objSelect.length; i++){
		if(objSelect[i].name.match(objRegex)){
			strTmp = objSelect[i].id;
			if(id != strTmp){
				elem = document.getElementsByName(strName+'['+strTmp+']').item(0);
				elem.style.display = "none";
				elem.disabled = true;
				elem.value="null";
			}
			else{
				elem = document.getElementsByName(strName+'['+id+']').item(0);
				elem.style.display = "";
				elem.disabled = false;
			}
		}
	}

}