function showExpoDate(){
	var nowDateDiv = document.getElementById("nowDateDiv");
	var daysDiv = document.getElementById("daysDiv");
	
	var expoDate = new Date(2010,9,31);
	var nowDate = new Date();
	var str = "";
   	str += nowDate.getFullYear() + "/";
   	str += (nowDate.getMonth() + 1) + "/";
   	str += nowDate.getDate();
   	//nowDateDiv.innerHTML = str;
   	
   	var d = parseInt( (expoDate-nowDate)/(24*60*60*1000) ) + 1;
   	
	daysDiv.innerHTML = d;
}