var img = new Array();

img[901] = new Image();  img[901].src="images/toiawase.gif";
img[902] = new Image();  img[902].src="images/toiawase_.gif";
img[903] = new Image();  img[903].src="images/news_more.gif";
img[904] = new Image();  img[904].src="images/news_more_.gif";

img[801] = new Image();  img[801].src="images/font_big.gif";
img[802] = new Image();  img[802].src="images/font_big_.gif";
img[803] = new Image();  img[803].src="images/font_min.gif";
img[804] = new Image();  img[804].src="images/font_min_.gif";
img[805] = new Image();  img[805].src="images/font_def.gif";
img[806] = new Image();  img[806].src="images/font_def_.gif";
img[807] = new Image();  img[807].src="images/top_back.gif";
img[808] = new Image();  img[808].src="images/top_back_.gif";

img[701] = new Image();  img[701].src="images/menu_news.gif";
img[702] = new Image();  img[702].src="images/menu_news_.gif";
img[703] = new Image();  img[703].src="images/menu_manu.gif";
img[704] = new Image();  img[704].src="images/menu_manu_.gif";
img[705] = new Image();  img[705].src="images/menu_qa.gif";
img[706] = new Image();  img[706].src="images/menu_qa_.gif";
img[707] = new Image();  img[707].src="images/menu_add.gif";
img[708] = new Image();  img[708].src="images/menu_add_.gif";
img[709] = new Image();  img[709].src="images/menu_link.gif";
img[710] = new Image();  img[710].src="images/menu_link_.gif";
img[711] = new Image();  img[711].src="images/menu_yanushi.gif";
img[712] = new Image();  img[712].src="images/menu_yanushi_.gif";

function change_image(nam,num) {
        if(navigator.appVersion.charAt(0)>= 3) {
                document.images[nam].src = img[num].src;
        }
}