dd=document;NS=(dd.layers)?1:0;IE=(dd.all)?1:0;DOM=(dd.getElementById)?1:0 
function showlr(L){ 
if(NS)dd.layers[L].visibility='show'; 
else if (IE)obg=dd.all[L]; 
else obg=dd.getElementById(L); 
if(!NS)obg.style.visibility='visible'} 
function hidelr(L){ 
if(NS)dd.layers[L].visibility='hide'; 
else if (IE)obg=dd.all[L]; 
else obg=dd.getElementById(L); 
if(!NS)obg.style.visibility='hidden'} 

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		preloadFlag = true;
	}
}