// 画像プリロード
if(document.images) {

	imgs[100] = new Image();  imgs[100].src = "http://www.olympus-esystem.com/dea/common/header_menu_product.gif";
	imgs[101] = new Image();  imgs[101].src = "http://www.olympus-esystem.com/dea/common/header_menu_product_over.gif";
	imgs[102] = new Image();  imgs[102].src = "http://www.olympus-esystem.com/dea/common/header_menu_tech.gif";
	imgs[103] = new Image();  imgs[103].src = "http://www.olympus-esystem.com/dea/common/header_menu_tech_over.gif";
	imgs[104] = new Image();  imgs[104].src = "http://www.olympus-esystem.com/dea/common/header_menu_gallery.gif";
	imgs[105] = new Image();  imgs[105].src = "http://www.olympus-esystem.com/dea/common/header_menu_gallery_over.gif";
//	imgs[106] = new Image();  imgs[106].src = "http://www.olympus-esystem.com/dea/common/header_menu_dealer.gif";
//	imgs[107] = new Image();  imgs[107].src = "http://www.olympus-esystem.com/dea/common/header_menu_dealer_over.gif";
	imgs[108] = new Image();  imgs[108].src = "http://www.olympus-esystem.com/dea/common/header_menu_download.gif";
	imgs[109] = new Image();  imgs[109].src = "http://www.olympus-esystem.com/dea/common/header_menu_download_over.gif";
	imgs[110] = new Image();  imgs[110].src = "http://www.olympus-esystem.com/dea/common/header_menu_qa.gif";
	imgs[111] = new Image();  imgs[111].src = "http://www.olympus-esystem.com/dea/common/header_menu_qa_over.gif";

}