function btnChange(no){
	var imgObj = null;
	var btnObj = null;
	for(var i=1; i<5; i++){
		btnObj = $('btnTitle_'+i);
		imgObj = $('imgTitle_'+i);
		if(i==no){
			imgObj.src = "http://image.mgame.jp/new_rpg/hero4/event/080402/btn0"+i+"_on.jpg";
			imgObj.height = 300;
			if(i!=1){btnObj.className = "btn_0"+i+"on";}
		}else{
			imgObj.src = "http://image.mgame.jp/new_rpg/hero4/event/080402/btn0"+i+"_off.jpg";
			imgObj.height = 50;			
			if(i<no){if(i!=1){btnObj.className = "btn_0"+i+"on";}}
			else {if(i!=1){btnObj.className = "btn_0"+i+"off";}}
		}
	}
}