if(document.images){
	img_data = new Array(
/* 0  */		"top_lbt01",
/* 1  */		"top_lbt02",
/* 2  */		"top_lbt03",
/* 3  */		"top_lbt04",
/* 4  */		"top_lbt01_01",
/* 5  */		"top_lbt01_02",
/* 6  */		"top_lbt01_03",
/* 7  */		"top_lbt02_01",
/* 8  */		"top_lbt02_02",
/* 9  */		"top_lbt02_03",
/* 10 */		"top_lbt02_04",
/* 11 */		"top_lbt02_05",
/* 12 */		"top_lbt02_06",
/* 13 */		"top_lbt01_04",
/* 14 */		"top_lbt01_05"
	);

	imgs = new Array();

//プレロードスクリプト
	for(i in img_data){
		imgs[i] = new Image();
		imgs[i].src = "./images/" + img_data[i] + ".gif";
	}
}

var CDValues = new Array('','csub','asub');

function ChgImg(fname,oname){
	document.images[oname].src = "./images/" + fname + ".gif";
}

function ChangeDisplay(obj,str,val){
	if(document.getElementById){
		//画像表示
		switch(obj){
		case 1:
			if(document.getElementById(CDValues[1]).style.display=='block'){
				document.getElementById(CDValues[1]).style.display='none';
				//ChgImg(str,val);
			}else{
				document.getElementById(CDValues[1]).style.display='block';
				document.getElementById(CDValues[2]).style.display='none';
				//ChgImg(str,val);
			}
			break;
		case 2:
			if(document.getElementById(CDValues[2]).style.display=='block'){
				document.getElementById(CDValues[2]).style.display='none';
				//ChgImg(str,val);
			}else{
				document.getElementById(CDValues[2]).style.display='block';
				document.getElementById(CDValues[1]).style.display='none';
				//ChgImg(str,val);
			}
			break;
		}
	}
}