selected_btn_top = "nobutton"; 
selected_btn_Side = "nobutton";
selected_btn_main = "nobutton";

function new_button (img_name,img_status,btn_no) {
	button [img_name] = new button (img_name,img_status,btn_no);
return;
}

function button (img_name,img_status,btn_no) {
	if (document.images) {
	    if(btn_no!=null) img_name=img_name.substring(0,img_name.indexOf("_"));
		img_path  = "/public/images/";
		this.img_off_src = img_path + img_name + "_n.gif";
		this.img_on_src = img_path + img_name + "_o.gif";
	}
	this.img_status = img_status;
	return;
}

function mouseover (img_name,win_doc)
{
	if (document.images && (img_name != selected_btn_top) && (img_name != selected_btn_Side) && (img_name != selected_btn_main)) 
	   {
	    win_doc.images[img_name].src = button [img_name].img_on_src;
	    window.status = button [img_name].img_status;
	   }
    return;
}

function mouseout (img_name,win_doc) 
{
	if (document.images && (img_name != selected_btn_top) && (img_name != selected_btn_Side) && (img_name != selected_btn_main)) 
	    {
	     win_doc.images[img_name].src = button [img_name].img_off_src;
	     window.status = "";
	    }
	return;
}