var img = new Array();

img[901] = new Image();  img[901].src="";
img[902] = new Image();  img[902].src="";
img[903] = new Image();  img[903].src="";
img[904] = new Image();  img[904].src="";
img[905] = new Image();  img[905].src="";
img[906] = new Image();  img[906].src="";
img[907] = new Image();  img[907].src="";
img[908] = new Image();  img[908].src="";
img[909] = new Image();  img[909].src="";
img[910] = new Image();  img[910].src="";
img[911] = new Image();  img[911].src="";
img[912] = new Image();  img[912].src="";

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