// JavaScript Document
	preload_image_object = new Image();
	// set image url
	image_url = new Array();
	image_url[0] = "images/main.gif";
	image_url[1] = "images/who.gif";
	image_url[2] = "images/fund.gif";
	image_url[3] = "images/consultant.gif";
	image_url[4] = "images/news.gif";
	image_url[5] = "images/memo.gif";

	var i = 0;
	var k=image_url.length;
	for(i=0; i<k; i++) 
	 preload_image_object.src = image_url[i];