buttons = new Object();
buttons[0] = "_df"
buttons[1] = "_ov"
buttons[2] = "_ot"
function buttonact(id, act)
{if(document.images) document.images[id].src =
eval( "isimages." + id + buttons[act] + ".src");}
if (document.images) {
 isimages = new Object();
 isimages.Up_df = new Image();
 isimages.Up_df.src = "../images/up.gif";
 isimages.Up_ov = new Image();
 isimages.Up_ov.src = "../images/up_over.gif";
 isimages.Up_ot = new Image();
 isimages.Up_ot.src = "../images/up_press.gif";
 isimages.Back_df = new Image();
 isimages.Back_df.src = "../images/back.gif";
 isimages.Back_ov = new Image();
 isimages.Back_ov.src = "../images/back_over.gif";
 isimages.Back_ot = new Image();
 isimages.Back_ot.src = "../images/back_press.gif";
 isimages.Next_df = new Image();
 isimages.Next_df.src = "../images/next.gif";
 isimages.Next_ov = new Image();
 isimages.Next_ov.src = "../images/next_over.gif";
 isimages.Next_ot = new Image();
 isimages.Next_ot.src = "../images/next_press.gif";
 isimages.Content_df = new Image();
 isimages.Content_df.src = "../images/content.gif";
 isimages.Content_ov = new Image();
 isimages.Content_ov.src = "../images/content_over.gif";
 isimages.Content_ot = new Image();
 isimages.Content_ot.src = "../images/content_press.gif";
}