isamap = new Object();
isamap[0] = "_df"
isamap[1] = "_ov"
isamap[2] = "_ot"
isamap[3] = "_dn"

function isimgact(id, act)
{
	if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) { // ensure browser can do JavaScript rollovers.
isimages = new Object();
// Close Window
isimages.close_df = new Image();
isimages.close_df.src = "../images/buttons/close_df.gif";
isimages.close_ov = new Image();
isimages.close_ov.src = "../images/buttons/close_ov.gif";

// Top
isimages.top_df = new Image();
isimages.top_df.src = "../images/buttons/top_df.gif";
isimages.top_ov = new Image();
isimages.top_ov.src = "../images/buttons/top_ov.gif";
}

// Window Close
function close_window() 
{
	mywin = window.close();
}