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 rollovers.
isimages = new Object();
isimages.tlacitko_df = new Image();
isimages.tlacitko_df.src = "images/navigation/fondy.gif";
isimages.tlacitko_ov = new Image();
isimages.tlacitko_ov.src = "images/navigation/fondy1.gif";
isimages.tlacitko1_df = new Image();
isimages.tlacitko1_df.src = "images/navigation/monitor.gif";
isimages.tlacitko1_ov = new Image();
isimages.tlacitko1_ov.src = "images/navigation/monitor1.gif";
isimages.tlacitko2_df = new Image();
isimages.tlacitko2_df.src = "images/navigation/celiff.gif";
isimages.tlacitko2_ov = new Image();
isimages.tlacitko2_ov.src = "images/navigation/celiff1.gif";
isimages.tlacitko3_df = new Image();
isimages.tlacitko3_df.src = "images/navigation/treasur.gif";
isimages.tlacitko3_ov = new Image();
isimages.tlacitko3_ov.src = "images/navigation/treasur1.gif";
isimages.tlacitko4_df = new Image();
isimages.tlacitko4_df.src = "images/navigation/analyzy.gif";
isimages.tlacitko4_ov = new Image();
isimages.tlacitko4_ov.src = "images/navigation/analyzy1.gif";

}