// JavaScript Document
function changetop(){
	value = Math.floor(Math.random() * 2);
	if(value == 0){
		document.write('<img src="../image/en-top01.jpg" alt="" width="570" height="170" />');
	}
	else{
		document.write('<img src="../image/en-top02.jpg" alt="" width="570" height="170" />');
	}
}