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');
}

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


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


//function hiddenLayer(elem) {
//document.getElementById(elem).style.visibility = 'hidden';}
//function showLayer(elem) {
//document.getElementById(elem).style.visibility = 'visible';}