function gif_over(src) {
	src.children.tags('IMG')[0].src=src.children.tags('IMG')[0].src.replace('.gif','r.gif');
} 
function gif_out(src) {
	src.children.tags('IMG')[0].src=src.children.tags('IMG')[0].src.replace('r.gif','.gif');
}

function jpg_over(img) {
	img.src=img.src.replace('.jpg','r.jpg');
} 
function jpg_out(img) {
	img.src=img.src.replace('r.jpg','.jpg');
}


function showLayer(layerName) {
	eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
// 	document.layerName.visibility="visible"';
}
function hideLayer(layerName) {
	eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}


ns=0;
layerRef="document.all";
styleSwitch=".style";
if (navigator.appName == "Netscape") {
	ns=1;
	layerRef="document.layers";
  	styleSwitch="";
}