function btn_hi(name)
{
document.images[name].src = "images/"+name+"-over.jpg"
}
function btn_lo(name)
{
document.images[name].src = "images/"+name+"-normal.jpg"
}
function exec_link(link, frame)
{
parent.frames[frame].location.href=link
}
function btn_do(name)
{
document.images[name].src = "images/"+name+"-down.jpg"
}
function MM_preloadImages() { 
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}